Sunderland were heavily beaten by Crystal Palace at the weekend.
Sunderland fell to a crushing defeat against Alan Pardew's side and Advocaat has suggested that there was a lot of pain felt by the players after the match.
The Dutchman says that everyone was quiet in the dressing room following the full-time whistle and insists that shouting at the team would not have done their confidence any good.
“The players were very quiet afterwards," he said. “Every football player knows when you can say something or not. No-one said anything and that said a lot.
“It doesn’t help if I start shouting at everybody because some are playing at their limits, there is no doubt about that.”
The defeat against Palace was arguably Sunderland's most disappointing in a season which has been littered with poor results.
The Black Cats have already fallen to heavy defeats against Southampton and Aston Villa, but this one against the Eagles was arguably more frustrating than any which had come before it.
Sunderland appeared to have turned the corner after beating Newcastle United, but any momentum they had picked up from that win has now been stopped.
It leaves the Wearsiders' Premier League future looking less secure than before and only a huge improvement will keep them in the top flight.