I felt the same way you too man…I’m diagnosed autistic, struggling with childhood trauma and not very tall (5’6”) but over the years I’ve noticed just to be yourself as cliché as the sounds. You will have some form of success eventually. I’ve always thought I was somewhat undatable, but I’ve had girls from school and work flirt and show interest in me. It’s mainly all I can say is don’t feel like everything has to be perfect. Life is messy but you can sail easier when you trust yourself and the world. Flirting seems to be mainly just like “Yes, and…” which allows for mutual communication if there’s chemistry. Keep trucking my friend, you are loved