Upwork, freelancer, fiver are all gig websites you could use, since it’s a hobby project that’s probably your best bet.
Alternatively design discords might help, make sure to let them know it’s paid.
If you’re looking for more premium then look for specific designers/web devs outside of these places.
My grandad was on the HMS Arethusa playing poker with shipmates in WW2, went to the toilet on another part of the ship just as it was bombed. All the other poker players he left were killed.
I also sometimes think about how my grandad’s bowel movements creating my entire family line.