Disco Elysium has good writing and story. If that’s what you want in games it’s one of the best. No mindless killing here.

Xcom is still good game if you finish it suggest you Wastelands 3 next is a step up in terms of difficulty, story and writing. Also Gears Tactics is solid. Then you can try cRPG like Divinity Original Sin 2 and Pathfinder.