Help with...growing up serious answers please?

Im 15 and I just realized everything i thought about myself wsa wrong i know im smart but ithoguht i was a lil popular not likee over the top buh somewhat and i thougth when i was at my age now id be getting some but im shitt with girlss im not popularr and all i do is smokee pot with a few peoplee noww honestlyy i wanna die sometimess what do i do