As far as I can tell, if these four screenshots are the entirety of your stamina logic, you don’t have anything that checks if you’re moving or not.
I’d recommend you use the ‘InputAxis MoveForward’/‘InputAxis MoveRight’ events in your character blueprint to verify any time you move. Those two events return a value in the direction you move (0 if there was no input and 1 if you move forward/-1 if you move back, ect) once per frame depending on if you’ve moved or not. So if the value of the MoveForward Axis is 1, you know your character is moving.