Walter Mazzarri says he should have "smashed up" the dressing room after his Inter side were held to a 2-2 draw at home to Bologna.
Michele Pazienza and Panagiotis Kone struck to cancel out Mauro Icardi's two goals on Saturday, before Diego Milito missed a penalty for Inter seven minutes from time.
The result left the hosts in fifth and without a win in four games, and Mazzarri felt that the breaks had gone against them - while lamenting his decision not to fire up his side at the interval.
"It's incredible, we seem to be missing clear chances and even managed to miss the only penalty we've received all season, despite a champion like Milito taking the responsibility," Mazzarri told Sky Sport Italia.
"Maybe we're just so out of practice that we never score them. It was logical that Diego Milito would take the penalty, as he's always taken them and he had fresh legs, unlike Rodrigo Palacio at that stage of the game.
"I wouldn't say we were unlucky, but incidents went against us. Bologna's first goal went through a sea of legs, the second went in because Rolando slipped over.
"At the moment, everything is happening like this. What are the odds of having a penalty after 33 games and not scoring it? It's just one of those periods where we pay the price for every single mistake. We analyse everything and correct errors in training, but we concede these strange goals.
"In Verona (a 2-0 win last month), I shouted at the players at half-time to raise the adrenaline, as every now and then we lose concentration and intensity. We ended up winning.
"I regret telling the players (here) they were in control and to stay calm. I should have smashed up the locker room!
"These players need to be shaken up and have the adrenaline kept to a maximum."
Despite the draw, Inter remain in contention for a UEFA Europa League qualifying spot, but with Parma, Atlanta, Verona and Lazio all within five points, Mazzarri knows his side could still miss out on European football next season.
He added: "As we are Inter and must always try to win, it can happen that we take the lead and then this fear sets in, as these are very young players. They feel the pressure after recent results.
"For those who saw the games all season, they'd think we deserve Europe. For those who saw the last four games they might think we didn't.
"Football is not an exact science, so even a strong side might not qualify for Europe."
|Bonucci, Biglia and Mr X? Fassone teases on Milan transfer target|
|Ronaldo staying at Madrid and that´s it - Zidane|
|Kolarov close to Roma move as Guardiola hails City debutant Foden|
|Klopp insists Coutinho is going nowhere amid Barcelona interest|
|Shakespeare confirms Leicester rejected Roma bid for Mahrez|
|Mourinho: Manchester United need to sign more players|
|Neymar ´very happy´ to stay at Barcelona, says Roberto|
|Barca star Neymar teases fans amid PSG speculation|
|Mexico 1 Honduras 0: Defending champions into semi-finals again|
|Manchester United 2 Manchester City 0: Lukaku scores again in ICC derby|
|Jamaica 2 Canada 1: Reigning Gold Cup runners-up reach semis|
|Ceballos: I want to be like Modric, Kroos|
|Man United target Aurier wants to leave PSG – Emery|
|Ibrahimovic sends message to Man United as he steps up recovery|
|RB Leipzig ´lucky´ with Keita, says Klopp|
|Torino don´t want to sell Belotti as Vieri urges striker to join Milan|
|Donnarumma trying to imitate Bayern´s Neuer|
|Carrick backs Pogba for United captaincy|
|Zidane lauds talented Mbappe as Madrid circle Monaco star|
|Everton, Zenit and PSV learn Europa League opponents as Galatasaray suffer shock exit|
|Africa Cup of Nations expanded and moved to June and July|
|Cillessen happy at Barcelona and denies Crystal Palace links|
|RFEF president Villar held in custody amid corruption case|
|Bonucci aims to follow AC Milan legends Baresi, Costacurta, Maldini|
|DFB punishes Borussia Dortmund over crowd disorder|
|Neymar not for sale - Bartomeu gives FFP warning to PSG|
|Griffiths given Champions League ban over Linfield incident|
|Real Madrid places up for grabs - Bale|
|BREAKING NEWS: Hernandez set to join West Ham from Leverkusen|
|Bernardeschi misses Fiorentina training camp amid Juventus move reports|
|Monaco warn clubs over illegal Mbappe approaches|
|Hughton ´very hopeful´ over Knockaert injury|
|Morata perfect for Premier League but Lukaku has advantage - Karanka|
|Whelan ends nine-year Stoke City stay by joining Aston Villa|
|Hoeness tells Sammer to ´say little´ about Bayern|
|Altidore´s girlfriend: Only I can grab Jozy´s nipples!|
|Perisic to play on Inter tour as Manchester United bid stalls|
|Defrel reunited with Di Francesco at Roma|
|Bonucci and Ramos best in the world, says Milan boss Montella|
|Injured Thiago out of Bayern pre-season tour|
|Klopp helped me a lot - Liverpool captain Henderson reflects on injury woe|
|Rashford: Lukaku partnership could fire Man Utd to glory|
|De Sciglio completes €12m Juventus switch|
|Insigne eyes Scudetto success... and the tattoo to match|
|Mourinho: Manchester United can´t compete with clubs who buy and buy and buy|
|Lewandowski happy to see Aubameyang stay at Dortmund|
|Morata: Conte has shown the most faith in me|
|Neymar signing ´would be good´ for PSG, says Silva|
|Chelsea eyeing all titles this season - Kante|
|Neymar could make PSG Champions League contenders - Emery|
|MLS Review: Red Bulls put five past Earthquakes, Sounders rally from 3-0 down|
|PSG target Neymar and Barca arrive in New York|
|Morata says goodbye to Real Madrid ahead of Chelsea move|
|Mourinho unfazed by Morata´s Chelsea move|
|United States 2 El Salvador 0: Hosts advance to Gold Cup semis|
|Roma 1 Paris Saint-Germain 1 (3-5 pens): Alves makes debut in win|
|Rummenigge names Sanches price as he doubts Milan can meet Bayern demands|
|Messi a machine built for football – Xavi|
|Costa Rica 1 Panama 0: Godoy own goal the difference|
|Kompany: Man Utd star Lukaku believes he´s best in the world|
|Mourinho: Guardiola rivalry has eased|
|Lennon steps up Everton return with goal in Twente friendly|
|Morata ´very happy´ as Chelsea move nears|
|Verratti drops agent for Raiola after ´prisoner´ comments|
|Celtic 4 Linfield 0 (6-0 agg): Plain sailing as Sinclair scores twice|
|He´d still be running now if we didn´t take him off! - Klopp impressed by Salah energy|
|Sammer not convinced by ´limited´ James|
|Morata ready to be Chelsea´s main man? Spain star compared to Costa and Lukaku|
|Aguero going nowhere as Guardiola cools Sanchez talk|
|Manchester derby gets worker bee emoji in tribute to terror victims|
|Chelsea agree terms with Madrid on Morata deal|
|Barkley set to miss season opener after surgery|
|Southampton goalkeeper Forster signs new long-term contract|
|Guardiola confirms Manchester City´s Danilo interest|
|Adrian sends Sullivan reminder after West Ham chairman´s gushing Hart comments|
|Liverpool 2 Crystal Palace 0: Solanke and Origi on target in Hong Kong|
|Murphy completes move to boyhood club Newcastle|
|Bayern Munich 1 Arsenal 1 (2-3 pens): Cech and Martinez the heroes in shoot-out win|
|Szczesny completes €12.2m Juventus move|
|AC Milan did not respect Dortmund over Aubameyang, says Watzke|
|Great in the air, will Crouch be a hit on-air?|
|Atletico guarded over Costa bid|
|Del Piero backs Juventus to respond to Bonucci loss|
|Jakupovic joins Hull exodus to seal Leicester deal|
|Mourinho unsatisfied with Manchester United transfer business|
|Barcelona have been sleeping, warns Xavi|
|De Sciglio finalising Juventus move|
|Roma eye Mahrez as Salah replacement|
|€75m? No way! Leipzig reject huge bid for Liverpool target Keita|
|Matic closer to Manchester United move after Chelsea tour snub|
|Lukaku: Mourinho has already made me a better player|
|Mourinho wants 15 more years at United|
|Wijnaldum confident Liverpool can challenge for title|
|Conte´s non-extension the latest twist in Chelsea´s stuttering close-season|
|Hammered at Arsenal and destroying Man United - five key games in Chelsea´s title triumph|
|Masterful tactics, signing Kante and Moses´ reinvention: How Antonio Conte won Chelsea the Premier L|