It feels like I'd have to change myself or end up alone if I don't

I feel like I'm turning into someone I don't want to be, I've been wrestling with these thoughts for a while now, it all started because I've never been in a relationship and always rejected whenever I asked someone out on a date. It started a rabbit-hole of crippling low self-esteem, constantly looking for what it is that makes me unattractive to women and finding ways of to improve myself, but the more I do the worse I feel and it gets to the point where I'm becoming somebody else to attract women. I've always been self-conscious about losing my hair early and being extremely short (5'7) and I'm not attractive in personality and behaviour either, I'm introverted, shy and overly emotional/sensitive, I'm a graphic artist who also plays guitar from time to time and makes sci-fi comics, I don't play sports or make a lot of money like other guys women seem to like, I'm not assertive or dominant, etc. I thought that my talents and personality maybe could be attractive to someone, but I've never met a woman who likes me for who I am, so that just leads me to be insecure and want to change myself to earn love and approval.