"Timber" datapack not working

Hewwo! I'm trying to make my own "timber" datapack which break logs slowly. The ones that are public are way too fast and feels like I'm cheating. If they are slower, like one log drops every 0.7 seconds it would feel more legit in my opinion.
I started to just make a regular "timber" datapack which instantly chops down the tree, and that's where I'm stuck right now. Been sitting for at least two hours trying to figure out why it wont work. It does load without any errors but just doesn't do anything:
TLDR; Tryna make my own "timber" datapack but nothing happens when I chop a log. First of all I want is to make it instantly drop all logs, and then add some kind of delay, for example 0.7 seconds between log drops.