LPT: You can change your MOS in the future...
And let me put it this way: the military gave me the experience to obtain my Airframe & Powerplant (A&P) certificates while I was on active duty. After I retired, I used my GI Bill to take a class that led me through the certification in two weeks. I then applied the credits I got for the certificates and took an English class that gave me an associate's degree. I took that to ERAU at the post education center and applied that towards a BS, which I got after 2 years of part-time online classes. I got paid a stipend while I took those classes. Do you think you'd ever like to buy a house? Can't beat a VA loan with no money down if you're a veteran.
Stick it out. I held three MOSs', one of which I was stuck in for three and a half years due to my bad decision-making/MOS choice. I hated it, but I did my job and was an asset to the unit. I learned the system, made it work for me, and got to where I wanted to be (by changing my MOS).
You might be depressed now, but if you dig deep and gut it out, you WILL be better off in the long run. You will expend far more energy trying to get out than if you just keep your eye on the ball. If aviation is where you want to be, use the Army to get there. It's a great big world out there for you to explore.
This old Sarge is pulling for you.