it took me a month to learn how to swim properly and there is a huge difference between swimming in a pool and swimming in the ocean

hey people im a 21years old girl and i really need honest opinions and views from your side. Please please help me out as soon as possible. I have to lose inches from arms and waist in just 25 to 30days. can anyone tell me how can i do that? i really dont have time to hit the gym as i have a very bu...