Uninstall all of that trash that you don't need on your computer so that you can enjoy the game.
I haven't played this CVI but I think it looks good and I have already added it into the queue since it's free.
I just realized Epic Games launcher is installed in the same partition as Steam, and only 60 GB is available because of stuffs from the latter.
Guess I'll have to move it elsewhere then

Civ is a good game if you're into Real Time Strategy (like Dota, C&C) type of games operating on a turn-based mechanic which is of slower-pace. There's a video of it below:
https://www.youtube.com/watch?v=eXo1SCwcns4