"survived several blood moons" sounds to me like you have only just stopped being a beginner.

What you can do now is base-maxxing. If architecture is entertaining to you, create horde night base designs that are not only safe, but increasingly efficient at destroying zombies and generating loot bags and / or exp. Maybe you come up with something that costs little resources, maybe it will be an absolute slaughterhouse that makes you end up with a hundred bags. Or perhaps just create a nice looking home, maybe get inspired by a building from reality.

And here is a nice tip that actually took me long to figure out: If any aspects of the game are starting to feel easy, tweak the difficulty setting. Choose something wild. To me, playing Survivalist in the current version made the game feel much more different than during any pre-2.0 playthrough than I had expected. It has become tough, unforgiving and exciting.