Main mods you need to download:
Mod Configurtion Menu
If you do not download these mods, the mods you install will not work properly.
Let's say you will buy GTA5, which country is cheaper with VPN. You will look at it on Steam. Here is the way to do it:
First we go to this site and search for the name of the game, then we click on the prices below and they are all listed in TL, now we download the game vpn, which is the cheapest country, and select that country and open the Steam Program, that's it