Help debugging and fixing major issues in my datapack!

Hello, I'm That1GuyGams and I'll cut to the chase
I am working on a datapack for awhile that is a mix on Grian's Last Life series. I call it Life Labyrinth. While mostly everything does work, there are major bugs that make it unplayable as intended. 
The first bug that I really want to fix is my regeneration issue. I have each player set to 30 hearts with a function called set_base_30.mcfunction, and that runs fine, it sets the base to 30, and gives the regen on it's own. You see, when each player loses a life in the series, it is supposed to run that function. But that's the issue, it doesn't run the function and give them the 30 & regen. So I wanted to know if anyone can help me fix this one bug first. I know there isn't much here, but if you need the file, and I'll send pictures of the code. But if you need the datapack file for help, please do lmk!