Cold approaching is stupid for incels imo. The things that count are looks (biggest factor) and the ability to be low inhib and social on demand.
None of these fields are good for incels, we don't have looks and most likely won't be able make up quick socially dominant moves, pass a foids shit test and so on.
For an incel its way better to warm approach, get to know a foid first without the everything or nothing situation of an approach. If she doesn't even want to talk to you or look at you, why even bother getting humiliated by a rejection? Get to know her first. I had some foids in my class that I could talk to about drawing or helping at the animal shelter (foids love this shit despite going for dark triad chads) but in the end it all broke the moment I approached them. Yet, I think its the best way to try.