Trade in car

So I got a truck n I’m still paying for it but do y’all think I can take it to the same dealer n get a smaller car or they don’t let u do that. I’m paying 22k for a 2008 GMC 😐 I didn’t have a drivers lisense n no credit I’m 18 so I think that’s why they charge me 370 every 2 weeks 😢 I’ve been driving with no lisense I know how to drive tho but I know that’s wrong I already did the test online I just have to go drive now this week at the dmv. also with my payments they said I’ll finish paying in 2 years I usually do 2 payments at once.

Update: yea it’s not a big dealer it’s a small one. N I still need 22k to pay it off it was 23k but I just got it like a month ago