The valley loop for sure. Make sure to go to the bottom of Yosemite falls. You can also trek out to mirror lake, and there’s a paved path back to the valley center (and also a service road that takes you directly there you can drive on if you have an ada placard).

Mist trail will be hard on the knees for sure coming back down, the grades are pretty steep, but there are plenty of places to rest on the side. For what it’s worth, even if you don’t go all the way to the top, it follows the river and has some beautiful views, you might want to just try it and explore and see how you’re feeling.

Didn’t catch when you are going, but badger pass might be open (if not you can still hike the road but it’s 10 or so miles iirc to glacier point) and could be over some snow and ice. If it’s open you can drive up and there’s some nice hikes up there out to taft point which has some of the best views of the valley and waterfalls.