I installed CM3D2, linked it to my COM3D2 and it has solved almost all of these problems. The COM3D2.StopQuitting.Plugin also helped a lot. It still says I'm missing all of those DLCs but I'm not too concerned about that...
I also found an old savefile that somebody shared on Reddit. I've attached it here in case anybody else needs it because it's actually pretty hard to find save files on the internet...
I also found an old savefile that somebody shared on Reddit. I've attached it here in case anybody else needs it because it's actually pretty hard to find save files on the internet...