SDL2 issues

Hello everyone! I'm not the most tech-savvy person and i am yet unable to figure this issue out.

So, to get to the point immediately and get the details in later:Trying to run a game that uses SDL2 gives me the error"Could not create OpenGL window:SDL not configured with OpenGL/GLX support"I have no clue what to do about this and how i'd be supposed to configure SDL... I have very recently (today) built SDL2 from source code to make sure it's the latest version too.

The game is GZDoom but i ran into issues with SDL when i tried playing a steam game (Lycanthorn II) that relies on GZDoom (though an older version, which might explain the different error it gave me). That game instead told me that i needed SDL 2.0.6 or later to run it, which is what got me to build the latest possible version even though it did not help. I was wrecking my head thinking that it was using some weird older binary i didn't know of instead of the correct one and eventually i decided to just try GZDoom to see if it was a game specific issue or such. The result was being told that my SDL isn't configured with OpenGL/GLX support. :/

I see that this is quite a small subreddit but i hope i will get help. Thanks in advance!

Edit: Forgot to mention, sorry, i'm using Linux (KDE Neon specifically) and my SDL build had no additional options when compiled as i strictly followed the instructions, not knowing of anything else i may have needed to do.