I can't say the same is true for me. I've only ever loved one woman that was worth having in my life, and now that we're not together anymore, I simply don't feel the need to be in a relationship anymore. I didn't really feel the need beforehand either, but when someone that special comes along it's hard not to get attached.
Maybe the reason some people can't find companionship is because of their personality, but I don't know if that's always true or not. I can't say I've ever been able to relate to incels, because I always preferred being alone anyway, so I don't know what the solution to the problem really is.