@Awojcik05, that sound scary lol, but if you are feeling crazy:
First, download the latest version of Pack File Manager (google it) and open my mod.
>Unfortunately, the steam workshop makes this a bit difficult. In your steam directory find the workshop files (mine is at C:\Program Files (x86)\Steam\steamapps\workshop\content). From there, you will need to rummage your way through like a bunch of folders (literally 1 for every mod for every game you download from the steam workshop) to find the file, named: hihi_tmb_cheateverything_over9000.pack

Open this .pack file with Pack File Manager, on the left there is a directory for the mod. Expand up hihi_tmb_cheateverything_over9000.pack/db/campaign_difficulty_handicap_effects_tables and right click on "data__hihilow_4", and rename it to something else. After you've renamed it you can double click to open it. In the right window a table will open up. You have two choices at this point:
>1: You can simply change column two (called "Human") to have no check mark on all the lines, >2: OR you can create 224 new lines (on the top bar, "Add Row"**) (**there may be a faster way to do this, idk). Then, copy the original 224 lines and paste them to the new 224 lines. This will be a total of 448 lines. On your newly created 224 lines, uncheck all the column 2 "human" to have no check mark.
FYI: The difference is that the first option is quicker, but your new mod will ONLY have AI effects, and will not help you, the second is considerably more work but also works for AI. If you properly renamed the table (so it is not named: data__hihiow_4) you could use both this mod and your new mod together to give AI and player all the benefits.

Finally, save it to your total war warhammer 2 data directory (Steam\steamapps\common\Total War WARHAMMER II\data) as a new name.
Good luck, I'm not sure how balanced this will be giving this power to the AI lol!