How i stop people heal automatic?
Solution
The script name 'Health' in the player's character is responsible for the health regeneration.
I. Create a blank script, name it 'Health'.
II. Place it in Game > StarterPlayer > StarterCharacterScript
Roblox will know and replace the Health script automatically every time a character spawns with the one you created. You don't have to make an external script just to detect and replace the Health script every time.