Problem with a user-sight

First of all, hi.

I got an annoying problem with castom sights. After many many tries i didn’t get any positive result.
Guided by some yt videos i followed every single step yet it’s obvious that I failed since i’m here.
First of all i created a new folder “UserSights” in the head game folder (steam/steamapps/common/war thunder/). Then inside it i created a folder “All_tanks” and add my custom sight into it. When i started the game, i got a notification about replacing “UserSights” folder. Now its way is “users/User/documents/MyGames/WarThunder/saves/(some numbers)/production/”. Though, I didn’t find my sight. Game restart. Still the same problem. I’ve tried to take another sight or rename folders and sights (idk how could it help me but still why not) but i didn’t help me too. I’m desperate.

P.s. Please don’t be mad at me because of bad english. I just want to play with silly sights😥