What should I do about a loose permanent tooth?

I know now what a bad decision this was, but I decided to try Smile Direct Club to straighten my slightly crowded teeth at a lower cost. At the end of the aligner process, my retainers (which were made based on what the computer predicted my end result would be, and not an actual impression of my end result) were creating a gap between my two front teeth overnight. It would go away by the end of the day. I wore them for probably a month and a half before I realized that was a horrible idea to be moving my teeth back and forth every day, and ever since, I have had a couple slightly loose teeth. To make things worse, since I didn’t want my teeth to just go back to being crowded, I thought I could get a night splint made and it would act as a retainer (I’ve needed one anyway). I didn’t realize that it does not cover all of your teeth, just the 6 middle teeth on the top. I decided to start wearing my bottom retainer again (the bottom was never a problem) however I feel that the night splint is again moving my top teeth slightly during the night because 3 weeks passed from the time I had the impressions made to when I picked it up. I believe my teeth were moving back to their original positions pretty quickly and the 3 weeks made a difference. Now I have an expensive night splint that I feel is causing more damage, loose teeth, and wasted money on invisible aligners. I don’t really know what to do and the loose teeth are causing me to panic.. however I never told my dentist any of this because I’m too embarrassed and ashamed that I did this to myself. Is this fixable?