Stuck on 22s average any help?

Hello!! I've learned full pll and have a good handle on f2l aswell as cross on the bottom, and despite all this I can't seem to push past the 20 second barrier except a few lucky solves with 15 secs or something, I have seen a lot of people get past it, and after searching apparently I already have the tools needed to get past it apparently, maybe cubing isn't for me?

Anyone got tips? am sure i could get past it with full oll but if i can't get past 20 secs with the tools I have now, then I probably cannot pass 15 secs at all even if i do learn full OLL.

does this make sense? probably another mindless rant on the internet AUGH its like seeing the ceiling I have.