Seanliu
Veteran
omg i googled xs and os methodfor those who don't know it's just corners first, but i didn't check out the actual steps. the guy in the video is so uninformed it's funny.
you're already quite a way into fridrich (CFOP is what most people call it), so i suggest continuing. you could also check out the ZZ method.
you can learn some F2L algs but try to conceptualize it and do it intuitively.
you've done a good job identifying your weaknesses, i dont think we can help you on turning technique that much. just practice it. flicking a cube with your fingers in all sorts of ways isn't a natural human movement so just keep at it and it'll feel okay.
Hmmph.