There are really only two things I think I can help with
Since you think you're bad at clarinet, would it be possible to switch do another instrument? Back in fifth grade, I played clarinet, and realized I really sucked when I got to middle school. What I did then was switch to what was quite possibly the HARDEST instrument to switch to, bassoon. I don't know if switching instruments could help, but if you don't think you could do another wind instrument, maybe try percussion, I'm also a percussionist and can tell you that's it's rather similar.
And the thing with having crushes on other people could be one of a few things. 1, you could be polyamorous, which means that you can be attracted to multiple people at the same time and be in a relationship with multiple people. 2, your current partner might not be right for you. I'm not super great at relationship advice, but my suggestion would be to try and find yourself, because once you do that, then you can figure out your problems in relationships.
And do you need a hug?