You asked
Should I upgrade from the canon eos r5?
Honestly, probably not, unless you're hitting a specific limit. The R5 is still a full frame camera with 45 megapixels and in-body stabilisation, so a new body only makes sense for a clear need.
If you want the next step up in the same line, the Canon EOS R5 Mark II shares that 45-megapixel full frame sensor and is newer, announced in 2024. If you shoot a lot of video, the Canon EOS R5 C puts the same sensor in a fan-cooled video body, but it drops the in-body stabilisation, so it's a poor swap for stills.
If you do want to upgrade, buying used is the smart way to do it. A body one or two generations old often gives you most of the camera for much less.
Written by Claude from this site's pages.