Maybe look into a BC-250 build. Basically a binned PS5 chip but you can overclock it to make back some of the performance.

https://elektricm.github.io/amd-bc250-docs/

That or i got a fairly recent office PC that had an AMD 8700G and 32 GB of DDR5 on ebay for 400 bucks. Slapped in a 9060xt and its a sub 800 dollar build. Didn’t do enough research though and found out the 8700 only has 8 PCIE lanes even though bios and specs list x16. Oh well, it performs well enough for now.