Teeth and confidence

I have some pretty crooked teeth in the front of my mouth and it looks ugly to me each one of my front teeth top and bottom are crooked I’ve even been told it looks like my teeth are broken or that I have shark teeth. I know that one way people come off as friendly or even to tell if someone is flirting with you they smile a lot and that’s hard for me to do I hate smiling so I look pissed all the time (thanks to my resting b*tch face) and I usually scare people away I can’t seem to make friends or get boyfriend. Guys literally ignore me because they know I have messed up teeth and I hate it I’m 19 I would think a few crooked teeth wouldn’t scare off all the guys around me but every single one thinks I’m ugly or that “I’m ok, but those teeth! ugh.” How do I regain my confidence with dating or even making friends I plan to get my teeth fixed buts I haven’t yet because of a financial situation