You Don't Need Tutorials For Making Data Packs
There is just a folder called "example"
change it to your namespace name

find the 2 JSON files "tick.json" and "load.json" and change the "example" to the folder name you changed it

complete: 100%
version: 1.20 - 1.19
made by: Mo-adly

if you want more help about this data pack you can comment your question