Rejection.?

Here we go... grade 9 I got hit up a lot to do sexual stuff with people, but I never took them up on their offers.

Grade 10 I had a crush on a senior, who liked me for a week then got bored I guess...

Grade 11 I asked out a guy who had a girlfriend (I had no idea).... then I asked out a guy who specifically told me “sorry I’m only into Spanish girls”..

Now I’m 17ish and I haven’t had my first kiss, or any sexual encounter at all...

I volunteer with this guy, and I thought he was just being nice to me, but other ppl straight up told me he was flirting. I just found out he recently got dumped by his ex. So I didn’t want to pry, but my friend suggested I ask him to hang out; so I did and he said he had plans that day... then NOTHING. Then I asked if he had plans today and he said “no but I have to volunteer” soooo I said like “okay no problem” and he didn’t fricken respond! Again.

I just kinda need help, am I doing something wrong?

Why am I constantly getting rejected or ignored?