Hey everyone I got a different assortment of mods (it was a package of them) sadly when I installed and ran them it changed some (not all) of my menus text into what I am guessing is Russian. Is there a way to change them into English or would I have to find and download their English files?

Mod packages are frowned upon here as they generally are redistributing mods without permission. Also, as they quickly become a hassle to update as new versions of the included mods are released, they tend to contain old versions of included mods. Speaking from an FCOM perspective I don't support issues players get after having installed a "FCOM megapack" or whatever for those reasons. You're better off being inspired by what such a package includes and download the mods you want the legit way instead, thus ensuring you get archives that are non-tempered with, the latest versions and support as well if something goes wrong.

That said, you can load all mods in TES4Edit and check one of those particular menu texts to see which mod it is that affects it.

I had lots of German names and some subtitles from some mods. I have fixed it just like Arkngt said: locate the item in TES4Edit and drag&drop original entry over changed one. Example that I can think of was Steinmauer something instead of Stonewall Shields.

Oh alright I apologize I didn't know it was really frowned upon but I can understand why it is. Thanks though ^_^