What would it take to make you feel, at least on the way to being worthy of notice, and respect - not for being a good martyr of some kind, or self-abnegation, which is a vibe I get from you, but just loud and proud, being good with standing in your own skin?
Who or what is shaming you right now? Obviously you don’t need to answer me, or on here, just thoughts you might want to list to start making sense out of your internal malware, and creating more productive things in its place.
Anything you believe about yourself costs the same energy and effort, whether convincing yourself you’re not good enough or that you are, so you might as well put it to good use.
If that’s you in your avatar, there’s nothing wrong with the way you look, to be blunt: your face is nicely proportioned, so you can work with that and project charisma and all the rest.
Here’s a post I wrote about projecting a good first impression. 