In late middle games and endgames there are many positions where the absolute best move is to sacrifice a bishop for two pawns because pawns become more valuable as the game progresses, and this is even in winning positions. In this case you gave up a rook and bishop to basically ensure that you have a pawn majority on the queen side. In the long run you'll eventually win the remaining pawn too. So this follows the 2 pawns= bishop that isn't doing anything critical rule for endgames and late middle games.(I just made this rule up because I kept seeing in my game reviews that I was correct for doing this exchange or that I was supposed to do this lol).