How Can I Stop Feeling Nervous/less Worthy Of The Type Of Girls I Want To Meet?

I can flirt/approach (barely) girls I find mildly attractive but not really all the way. Ever since I was 13 (i m 20 now) i ve been settling for girls at "the bottom of the barrel" if you will... The girls i m really attracted to I always get WAY to nervous and petrified to talk to. Part of the reason is because i m only 5 3" and the girls I like are really social party girls who usually go out with guys who are 5 9-6 0" so I feel like i m really unattractive to them. I only rarely see... How Can I Stop Feeling Nervous/less Worthy Of The Type Of Girls I Want To Meet?
https://www.myptsd.com/c/threads/how-can-i-stop-feeling-nervous-less-worthy-of-the-type-of-girls-i-want-to-meet.51533/