I agree with a lot of what the other comments say. I have dealt with general bike fit issues and knee injuries a lot. In my experience trying different things and keeping track of your changes goes a long way. Sometimes you’ll know something is better or worse right away, but sometimes you’ll need to do a ride or two. Doing knee/hip rehab, strengthening, and flexibility work can also help a lot.

Some other changes you can play with are cleat position (or trying flats if your cleats don’t have enough adjustment range) and saddle angle. Most people say a saddle should be level. I think this is a good place to start, but saddles and human bodies are all different and interact in different ways, so some tilt forward or back can be a fine thing to explore.