[I will go to the dentist, I would just like to see what people have to say here]

I'm 16, I had braces for nearly two years. From when I was 12/13 to 14/15.

But the problem is, when I relax my jaw, my bottom one moves quite far back, making it look like I have no chin. It looks AWFUL. I hate it so much. So I "make"/put my lower jaw forward to make it look normal.

When I do relax my jaw, my top row and bottom row don't really touch either.

Is this an overbite/overjet?

I really want this fixed :'( I cry a lot over it b/c it damages my confidence.

Thank you for any help
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Additional Details
I really don't want to go through metal braces again, especially since I'm starting a new school soon :(