All my games look the same

I use UE4 for years, but I have always had this issue. All my UE4 games look exactly the same (graphics-wise) and you can tell they’re made in UE4. I have modified the lightning and post processing, but I still have the same issue. Something just gives away that they’re all made in UE4. Any ideas how I could make a game look “normal” and not just like every other UE4 game?