Don't go for internet advice my friend. Please go see a trained physio. You are setting yourself up for a lifelong injury if you decide to follow internet based advice.
That being said, even if you avoid heavy lifting with your arms, you can still do a lot for your core, back and lower body without any risk to your arm.
Same boat. Started after COVID closed the gym. But to be honest its not the same. I am the kind of person who needs constant motivation and that is only available in the gym.
Btw what are you doing? I am doing incline, decline and normal pushups, squats (weighted and bodyweight mix) and dips mostly. And then some good old curls with my rusty old dumbbells. Thinking about getting in to headstands, but too much of chicken to actually attempt it so far. Lost a lot of definition in last two months