Where you start with almost nothing and have to colonize planets or solar systems.
Where you get resources to expand your population and try to survive against all sorts of dangers.
That sounds a lot like the game Rimworld, you should take a look.
But i have to mention that RImworld is only early access with a top down view camera perspective with crappy graphics.
I never played it myself so you have to figure out for yourself, watch a lets play on youtube and decide for yourself.
). However, the best 4x space strategy game I ever came across was Space Empires V; the only complaints I have against it are its poor graphics (by today's standards), and weak AI (though it has multiplayer options).
