Learn
Match pieces to the position
Bishops open, knights closed.
Your pieces have personalities. Bishops love open positions with long, clear diagonals; knights prefer closed positions full of locked pawns they can hop over to reach squares a bishop can't. So when you choose what to trade and what to keep, read the pawn structure first.
Your own pawns matter too: a bishop hemmed in by pawns sitting on its own color is a 'bad' bishop — keep your pawns on the opposite color to keep its diagonals open. The diagram is a closed position with locked chains, where the nimble knight outshines the blocked bishop.
In this closed position with locked pawn chains, which minor piece is usually stronger?
Answer the question to keep going!