The following is the correct position for freestyle:
1.？ Head: the head should be lower than the water surface, so that the body can swim more parallel. At the same time, eyes should also look at the bottom of the water, so as to keep the balance of the body.
2.？ Posture: You should keep your body straight. Keeping your body level can reduce resistance and make you swim faster. At the same time, keep your body tense and make your body more powerful.
3.？ Arm: The arm is one of the most important parts in freestyle. The correct arm posture is to put your arm in front of your head and then draw a straight line forward until your arm is straight. Then take back your arms and prepare for the next stroke.
4.？ Legs: Legs are also very important parts. The correct leg posture is to put your legs together, then kick your toes outward and then take back your legs to prepare for the next kick.
The above is the correct posture of freestyle, I hope it will help you.