Coming to Skyrim from The Witcher 3, and two things I really feel the absence of is realictic lighting that makes the whole world look flat and boring, and hard to look at for too long, and that quest markers show you the direction of the quest, but not the path to get there on the minimap.
What mods that work well with playing on Linux through Proton do you recommend (and how to install them)?
The beginner Illusion spell, Clairvoyance, will use pathing to show you the shortest path to your closest active quest marker. It is available in the vanilla game. The merchant in the first town will sell a copy, as will some court mages.