Hey,
So i’m guessing your health bar decreases due to a variable called “health”.
When health is equal to zero, or below zero, you will then want to get the player controller, get the controlled pawn, and then call the destroy method, or create a death method where you reset the attributes/ stats in the player state.
Then after a timer, or delay, spawn a new instance of the player.
If this sounds alien to you, I recommend you watching the YouTube tutorials that Epic has provided. It will help you learn than look at a print screen.
Hope this helps,
Mo.