I'm kind of in a similar boat to you, as an aspiring adopt maker myself!
I do feel like the adopts market can be rather saturated, and the ones that sell well seem to be adoptables from artists who are already well established in their niches. However, I'm sure that's not the whole story. I...
Got a budget space for a moodboard custom kitty using ArtsUwu's base! Hop on over if you're interested. Auction is running for 24 hours.