I feel you on that. (also on the Covid derailing; that hit me hard last year and I injured my back coming back too hard and too quickly).
Have you looked into routines where you use a somewhat lower weight, but use a deep/full Range of Motion, a really slow (even 4-5 seconds, depending on the lift) controlled eccentric, and a pause of a second or two in the maximally-stretched position? Those can be a lot easier on your joints while milking a LOT of extra stimulus and strain on the muscles out of a lower weight. They can feel a little bad for the ego because I'm struggling to do reps at lower weight than I'm able to do with faster motions and no pause, but from a practical standpoint it's awesome to get the same or similar work in using lower weight, because of the reduced joint strain and injury risk.
Cable exercises can also be really good for the smoother resistance curve. I had hurt my left shoulder recently and found that my usual chest staples of dumbbell and barbell press were painful, but cable flies were much less so, while getting great isolation and mind/muscle connection to my pecs.