incel came from a group that used to be active on social media. Then it was banned in the purges and basically doesn’t really exist anymore as a major group. Now its a term of abuse used to refer to anyone who expresses an opinion against feminism or misandry or perceived loser men. Very few people actually openly identify as incels although actual incels in the dictionary definition are probably extremely common. More so among leftwing men ironically enough.
The term “incel” was started in the late 1990s by a lovelorn Canadian woman who simply wanted to start an internet forum where she could discuss the issue with people like herself. Unfortunately, the term got appropriated by a subset of wretched young men who absolutely hate women because they will not put out for them. Occasionally, one of them will get violent and do something such as ramming a vehicle into a crowd of people.
So, if some SANE, REGULAR guy is not getting action, he probably shouldn’t call himself an incel and thus associate himself with these miserable wretches.