[weeeeelp]

You might want to check out Foxhole, it ticks plenty of boxes on what you've described, but it's more on the action side. It's a MMO combat game with a persistent world reset between every "war" (each one takes between two - several weeks realtime), players need to work together on fighting the other side, fortifications, logistics and strategy to defeat the enemy. It's pretty fun, albeit the camera angle gets a while to get used to.