As someone who spent obscene amounts of time growing up on/learning photoshop, Krita is pretty much the closest. In terms of workflow for photography, non-destructive editing, etc. it only takes very minor tweaks to adjust but otherwise feels native. There’s also tons of resources for it.

I’ve heard good things about Inkscape in terms of vector graphics, but haven’t used it yet myself.

Worst case scenario you try out a program and move on, and since it’s free there’s very little pressure.

Good luck!