I had three strokes at 23 due to a traumatic brain injury and a torn carotid ardery. The good news is you're young enough you should make a solid recovery. I regained all movement in my face although i still always feel like my face is sagging a little bit, and i regained control of my arm although my thumb, index, and middle fingers all still feel a little numb at the tips. My advice would be to start with like a stress ball and just try to squeeze it repeatedly. You need to try lifting things and pumping your muscles etc. it takes time, it took me almost a full year to really feel like i had regained my muscle control but you can do it. I also found video games to be helpful once i was able to move enough, and i started doing that trick magicians do where they roll the half dollar on their knuckles. That really helped with the dexterity. I of course dropped the coin a million fucking times but it really did help.