Guys would you recommend Wasteland 3 or Baldur's Gate 3 or Pillars of Eternity 2?
...or Disco Elysium?
those are all worth a purchase on sale but if you had to absolutely choose just one keep these in mind:
Wasteland 3 is a squad based fallout like rpg. each member of your squad can have a little personality and it's pretty fun. the story is... good but what's the word?... strict. you actually need to think a bit about the consequences of your actions to get better endings. i won't spoil it, its a complete game with dlc.
Baldur's Gate 3 has
b-e-a-u-t-i-f-u-l graphics but is still in early access with classes missing and such. the combat is fun and dynamic and the party members you can pick up are fun and interesting. the fact that it actually shows dice rolls for your skill checks is pretty fun.
Pillars of Eternity 2 kind of requires you to play PoE 1 to get some plot references but is it's own story for the most part. i don't know how much you know about these obsidian crpgs but they're fun but mainly roleplay focused.
Disco Elysium is... well, it's an experience. it's very easy to play "wrong". what i mean is you can literally die in the first room of the game. i really don't want to spoil but its a solely story experience with no combat (unless you count a few roll checks as combat). the story is fantastic and does require thinking as you play a detective. its also a complete game.
as i don't know your preferences between story/combat, all i can say is the most "bang" for your dollar has to be Disco Elysium in my opinion: it doesn't have dlc to consider and it's ment for many repeat playthroughs (play it even a little differently than last time and you'll generally get a different story, as even failed rolls contribute to your unique narrative for that playthrough). in fact the game deals pretty well with meta-knowledge as you try, try again