What are the imp levels to mark on chart before market opens

what are the imp levels to mark on chart before market opens ?
which is strong and weak support and resistance levels?
how do you know next support and resistance level will hold or breakout after entry ?
Like i have been drawing too many levels on chart , it is becoming tougher for me to take entry because of too many levels( not getting proper risk reward )

You could mark the previous day high, previous day low, previous day close as a start and watch the price move in these areas.

You don’t. You let price action follow.