u/GroundbreakingOwl911

I am 19 years old 183 cm 113 kg bmı 33 obese person I recently started working out and I always use other gym equipments or walking or swimming for exercise but I really wanna do calisthenics. And improve my felcebility and mobility but I can barely do 1 pushup I don't know maybe I am doing it wrong but what should I when can I start doing more than just lifting and walking and swimming. I don't know what should I do. What si my ideal weight how much flexible I can be. I don't expect to be a gymnast or anything I just want to be the best I can be. And where can I start