When should we trade in chess?

SO the time when u do not know when to trade here,s the answer

.If You have more material than the opponent then trade.

.Trade if the opponent is attacking Your king so when you trade you will eliminate the attack.

.Also avoid Trading Pieces for no reason See which side is happier.

.Also trade if you have bad pieces and the opponent has good pieces means that if you dont have a developed piece or your piece is bad than your opponent then trade with the good pieces.

. Also avoid trading pawns in the middle game you need those Pawns to promote right?

.If you do not have any space to develop your minor Pieces Then Trade.

do not trade unless you gain something in return, more pieces usually means more tactical chances, good players defend

you covered the rest