The Four Pawns Attack was sometimes a weapon of GM Arthur Bisguier although if memory serves, he usually played Bg5 before advancing the f-Pawn. Many years ago while in Spain, I purchased a few small opening booklets and the K-Indian, 4 P’s Attack was one of them and I’ve liked it ever since. It may not be the best opening at the master level, but if you are playing anybody under that it may be worth giving a try. You can probably glean enough from the Wikipedia article to see if it’s something you’d like to try.
In the game that follows my mid-1600 opponent, who would no doubt be a couple hundred points higher if he wasn’t one of those fast movers, played the ill-considered 6…Nb6 and the N was immediately forced back with a loss of time.