Anyone know how to code lua?

Yeah, I do believe lua is easier to get the hang of than C++. It has easier syntax in my opinion so you should be able to get the hang of it fast.

If tutorials don't help I suggest just thinking of an idea of something simple and trying to make it using the gmod wiki

Lua isn't too hard. Compared to something like C++, it's a baby language. The heart of learning to code is understanding the logic. Once you start to think like a programmer and know a few ways to complete common tasks, coding is just referring to the GMOD Wiki and constantly testing your code. You won't be able to code the sort of stuff found on the GMOD store within days, but you'll pick up stuff slowly. Keep at it and you'll do fine.

It's easy, lol. Even in roblox studio theres a lua. Do your best to learn it.