You asked

Can I use adapted lenses on the canon eos rp?

Yes, the catalogue lists plenty of lenses from other makers as fitting the Canon EOS RP. I'd start with the Canon RF mount page to check how the mount works. These are the ones I'd look at first:

The RP has no in-body stabilisation, so for slow shutter speeds, use stabilised lenses. Many of these don't have it, so a tripod or faster shutter speeds will help. For everyday use, I'd still pick a native RF lens like the Canon RF 50mm f/1.8 STM.

Written by Claude from this site's pages.

From these pages