But Guardiola says it is up to the players to take VAR out of the equation.
“When this happens it is because we have to do better, not the referees or VAR,” he continued.
“I never trust anything since I arrived a long time ago. Always I learned you have to do it better, do it better, be in a position to do it better because you blame yourself with what you have to do, because (VAR) is a flip of a coin.”
Guardiola was speaking before Wednesday’s meeting with Palace, which they need to win to cut Arsenal’s lead at the top of the table to two points.
That would still leave Arsenal needing to drop points in their remaining two games – against relegated Burnley and Palace – for City to have any chance of winning the Premier League title.
“Of course it is not in our hands in the Premier League. Always I say to the players, ‘Do it, do it, do it better’,” Guardiola added.
“The only thing we can do is do it better, that is only in your control.”
Guardiola’s side will play in their third FA Cup final in three seasons when they meet Chelsea at Wembley on Saturday.