how do i make a passed pawn by sacrificing two pawns


It depends on the position, but oftentimes a breakthrough with pawns alone is not possible, unless the opponent plays poorly. You usually have to bring in your King or other pieces you may have left to help. You should also probably first try to play out the possible pawn moves in your head, since sometimes you can actually successfully sack how you wanted—it's very situational, however, so it should be looked at in a case-by-case basis.

Go to Daniel Naroditsky's YouTube channel and he has endgame videos specifically on Pawn end games. They are fantastic. Don't forget to subscribe.