Tennis is a racquet sport obviously, but it's also a balance sport. I am a pretty good tennis player, B-level, and always liked balance sports like cycling, skiing, water skiing, motorcycle riding, and so on. Maybe you should just learn a few things like grip, forehand stroke, backhand stroke, leading with your shoulder and hitting through using your legs, hips, and body mechanics. Never just with your arm; you'll develop tennis elbow (painful). (The spins, ball toss, serve, and consistency comes later.) Then practice your strokes by hitting against a wall. If tennis still isn't your game, then maybe racquetball could be your sport. Then you use more arm and wrist action. It could be just a grueling as tennis and great exercise. It's somewhat of a balance sport, too. They're not complementary sports, so it's either one or the other. Many people play paddle ball or whatever it's called on a tennis court, too. I don't know much about, but my neighbor was telling me about it. They're all social sports so it's a good way to make new friends and acquaintances.