Try the Total War games, especially the older (non-Warhammer) ones. Units take time to carry out actions, there is no point and not really a way to do insane actions per minute counts, as if a unit is engaged in melee, it can’t really disengage without losses. There is also a great scale to the whole thing. I loved Shogun 2 for example.

I also like Eugen games like Wargame, Steel Division or Warno if a modern shooty type thing is more your game. Maybe try Regiments, that one is also good and maybe a bit less complex than Eugen titles.

Neither of these has base building, both are more of a “this is how many soldiers get for this battle, use them wisely” type game.