First things first,
Never post "mod doesnt work" anywhere- its too vague and wont help anyone.
Lets go over the different ways a mod "can not work"

You dont see the "changes in game"
Your game crashes on start up
Your game crashes on new campaign start
your game crashes on loading an old save
your game crashes on ending an old saves turn


Once you have identified the issue

1) Verify that the mod is being selected when launching the game under mod manager
2) Try running the game with out the mod in question
3) Try running the game with only the mod in question
4) Mess around with load order for the mods
5) Navigate to appdata/roaming/thecreativeassembly/launcher and delete moddata.dat
6) google pack file manager (PFM), or rusted packfile manager (rPFM) and install from Twcenter
7) open the tool and navigate to steam/steamapps/workshop/content/### and open the pack in question, Do file--> change packtype --> movie , then do Save As, except save it in steamapps/common/totalwar threekingdoms/data folder. Try launching the game without the mod turn on in ur launcher.

If all of this doesnt work, try posting your experience with some detailed info learned from these tests to the comments

Thanks and GL