Fake Nails for Wide Thumbs

I’ve been wanting to get fake nails for a while now, but all the ones at Target and Walmart are so freaking slim and small for women. fake nails have never been able to fit on me. My thumbs are too dang fat and square.

I get small, they’re too small. I get medium, they’re too small for my thumbs. I get large, they‘re still too small for my thumb and too big on my other nails.

I tried getting custom nails off Etsy by doing that tape trick to measure your nails. When I got them, they were WAY too big for my other fingers and STILL didn’t for my thumbs.

Is there a way for me to get the correct nail sizes? Do I have to go in to a nail salon for a sizing or something?