You can social distance walk. Or in your room do bodyweight exercises. r/bodyweightfitness. Or my brother does a 30 minute exercise band routine every day. Ask for it for your next birthday or Christmas present. Or your parent may get it for you just because you are taking an interest in trying to exercise
Exercise Bands Resistance Bands Set with Bigger Handles and Bag, Upgraded Workout Bands with More Resistance for Women and Men https://smile.amazon.com/dp/B08V8P48Z6/ref=cm_sw_r_cp_api_glt_fabc_BNWQQW0F0H2C3J33CJCW
I used tubular bands for a few exercises. The inexpensive sets sold by Amazon work well and come with a 10, 20, 30, 40 and 50lb band plus accessories for around $20. Using them for a few years they show wear but none have failed. However, I would avoid lining them up with the face (like doing face pulls). The link below is an example of the offerings.
I use them as a substitute for cable exercises. To that end I want resistance that is almost constant and to do that I have them stretched far to begin with. For flys two bands are attached 20' apart and with me in the middle the bands stretch from 8' to 10' during the exercise. Their unstretched length is 4' and so the band stretch distance is 4' to 6' making for a 50% increase in resistance.
So, take most any cable exercise and it can be done with bands. I do flys, laterals, bent-over laterals and front raises. Others I have done are leg curls, pullovers, tricep press downs, Lat pulldowns and bicep curls. Shoulder shrugs and other exercises lend themselves to bands with the shorter flat bands being preferred for some.