This is some PUA type dogshit. It is a numbers game, but you need to be talking to a lot of girls that are already acquainted with you in some way, i.e. through social media or mutual friends. Just lol if you think going and bothering random people is a good way to get sex. Even if it were, do you really want to fuck the first girl that says yes? You need to first acquire a large amount of female contacts (i.e. aggressively pursue them, because they won't usually do the same for you) and decide which ones to escalate for sex. That requires a lot of constant social interaction and leaving your house. Of course incels are too busy playing Overwatch, so they blame their looks for all their problems in life.
Just be an interesting/socially active person is the easiest way to NTmax and get sex. Of course if you're out of college this is like impossible to actually do, but any youngcels would be wise to do this.