What worked for me while i was still in uni was i literally just didn't look at foids at all and never spoke to them unless they spoke to me first and never show any signs of interest to them, don't stare at their eyes or bodies, give a second or two of eye contact to seem normal but look away regularly. Sometimes you can kinda feel the more insecure foids shriveling up as they inevitably wonder why is the incel looking dude not oogling at them 24/7 so they can make fun of him. Even then i still had a few occasions where for example i was bullied by foids for no reason, i remember a foid gagging when i moved along the hall. Another time i was moving a tight space and a foid bended over across a desk in a fuck me position as i was passing, no doubt as a joke for the other douches who think this is peak humor. I call this the incel trap, if you dodge the initial bullying, some foids will pretend to do flirting/body stuff to rile you up and make you do clown things so they can use that as ammo to bully you. You just look away and try to keep a straight face, i only had a slight smirk as i was already burned by this and they won't get me like that again.
Nevertheless even though i dodged that shit they still kept laughing at me as i pass somewhere etc but at this point they get bored as they have no ammo and fuck off. Basically always remember that if you give them an opportunity they will fuck your shit up. For me it was enough to remember the foid that burned me the most by pretending to be into me as a joke, once that happened i realized the pattern, how it starts, how it develops etc. It scarred me for life but it also sort of innoculated me against the dumber foids at least because i never got burned after that. Whatever the fuck you do, don't fall in love. If that happens you are at the mercy of a foid, a creature that has no mercy by design towards an incel.