The phrase "total collapse" means a complete and sudden breakdown or failure of something, where everything falls apart and is ruined.
Sentences with «total collapse»
Is college football honestly to the point at which parents will ignore a man's total collapse of character because of his consistency as a coach? (sbnation.com)
Last year, when we were leaking goals left right and centre, he came and saved our season from total collapse. (justarsenal.com)