PLEASE HELP!! I have the WORST luck with girls!!! Why am I ALWAYS the loser?

You need to go hard or go home, my man. Stop being "friends" with girls you fancy. I never do that. If you actively want to see someone naked, they are not your friend. You court them, not befriend them. As soon as you're interested in a girl, let her know. If she'll not feeling it you find another. You gotta keep it moving. Don't get fixated.