There are like 5 games ever that are morally complex. Most games that let you choose between two sides let you pick between a faction of fascists or ineffective cultish hippies. It's rare for games to present better ideology than those.

Off the top of my head, I can only think of a handful. Disco Elysium, Fallout: New Vegas, Planescape: Torment, Frostpunk, Caves of Qud, Vampire TMB. All of those have writing that allows the player to explore what good or bad are in the right situations. DE is probably the best I've ever seen in a game, an absolute masterpiece that shows you the consequences of the bad moral choices, and yet also explores why you might choose the good ones.

I haven't played Baldur's Gate 3 yet but I'm told the writing is actually pretty good, so I'll check that out.