So I got it to work, I'm writing a short tutorial for anyone else wanting to import Klashman tactics since the tutorial provided is quite messy. I'm hoping this is clearer.
You need 2 files.
1. Klashman's tactics file END OF YEAR 2019/2020 HERE!
2. Zlac's tool 2020
Link (will now on call it Zlacs since the original name for the tool is very long)
Steps to get it to work
1. Extract both zip files
2. Get your own Pes 2020 save EDIT00000000 file from ...My Documents/Konami/EfootballPes2020/76561198038014628/save folder
3. Copy the EDIT00000000 file to Zlacs/importer
4. Copy all files inside Klashman's file/2nd version of tactics folder (lots of files) and paste them to Zlacs/importer/import folder
5. Copy Klashman's id_list.txt and paste it to Zlac's/importer (overwrite Zlac's id_list.txt)
6. Go to Zlac's/importer and run tactics_importer.exe
7. EDIT00000000_encrypted is created
8. Rename EDIT00000000_encrypted to EDIT00000000 and place it in your save folder My Documents/Konami/EfootballPes2020/76561198038014628/save folder
9. Profit