>>105657714
Looks like the best you can get (if you're extremely lucky) is a used RTX 4070/Ti (12GB) or a 7800XT, but the active listings for RTX cards are all overpriced.
https://www.ebay.com/itm/396748678186
This active listing will probably end at above $500, not worth it. Just sharing it as a reference.
Bid on items with unique product images. Watch out for "Parts Only" listings, these are broken cards.

You might as well consider a new 9060XT (16GB) or a 5060Ti (16GB).

Barebones reference design 9060XT
https://pcpartpicker.com/product/BxRnTW/asrock-challenger-oc-radeon-rx-9060-xt-16-gb-video-card-rx9060xt-cl-16go

This one should run cooler and quieter if you care about it.
https://pcpartpicker.com/product/TcG2FT/gigabyte-gaming-oc-radeon-rx-9060-xt-16-gb-video-card-gv-r9060xtgaming-oc-16gd

These 5060Tis are overpriced, I wouldn't buy it. Just showing you what's out there.
https://pcpartpicker.com/product/js8Pxr/gigabyte-gaming-oc-geforce-rtx-5060-ti-16-gb-video-card-gv-n506tgaming-oc-16gd
https://pcpartpicker.com/product/M64Pxr/asus-prime-geforce-rtx-5060-ti-16-gb-video-card-prime-rtx5060ti-16g

Not sure what to tell you man, the graphics card market is pretty gay.

Product reviews to help you decide. Different card models from the ones I recommended but the performance is about the same.
If I were you, I'd get the new Gaming OC 9060XT 16GB unless you need NVIDIA features. GL.
https://www.techpowerup.com/review/asus-radeon-rx-9060-xt-prime-oc-16-gb/
https://www.techpowerup.com/review/zotac-geforce-rtx-5060-ti-amp-16-gb/