game problem with mods (The Witcher 3: Wild Hunt)

Hello everyone! I've been playing The Witcher 3 for a long time, from the very first playthrough I started using mods, installed everything manually. When I reached the limit of mods - put the mod on unlimited - so far, too, everything is ok.
But here's the problem. Before the last uninstallation of the game, I copied some folders like content, mods and DLC to replace them in the game directory after I install again. I installed it again, replaced it, but now it gives the following error:
Error [content0] game types.ws (52): Enum 'EAreaName' already defined.
Error [content0] game types.ws (68): Enum 'EDlcAreaName' already defined.

on the Internet I did not find any help in my case, because I also deleted the Hacks folder from content0 and reinstalled the game +100500 times, deleting the mods folder and other, and everything swayed the same again, i.e. not a clean game was installed, but a "dirty" one. and simply restoring local files failed and even new errors appeared. I even removed the synchronization with steam cloud and installed it again - but nothing. After removing all the mods - the game starts and all the rules, but it is worth only 1 mod to the mods folder to load (generally any) - it gives such an error.
Tell me, is there a way to do a completely clean install of The Witcher 3? Or maybe there is a way to completely delete all data about this game from the computer and steam, so that it is straightforward as it was during the very first installation?
I really want to return my old native assembly, in which everything was fine.
If anyone has any useful information - please respond!