It is a waste of time to practice swimming when you are nervous in the water.
After fully relaxing in the water, finding someone to guide swimming will get twice the result with half the effort. It is best to prepare the following things:
Watch the floating swimming video online.
Practice yourself. After wearing the school bathing suit, dive in the deep water area for more than 10 times, fully relax, and you will be OK if you are not afraid of water.
Feel the buoyancy in the water and keep the balance in the water.
Inhale with your head up, exhale slowly underwater, and don't inhale through your nose.
Ask the coach or swimmer to guide the movements, and learn the foot movements first; ? Learn hand movements again.
The second time, remove the floating arm ring and practice hand-foot coordination, paddling-pedaling-paddling-pedaling.