thing is, games aren’t pretty because they model every cell in every lifeform and have 5 gigabyte textures for each individual leaf, they’re pretty because they have good graphical design.
Just lighting alone is like 50% of making a scene look nice, you can literally just slap together a low-poly flat-colour scene in blender and set up nice lighting and people will call you talented.
A prime example of this is valheim: ps2-style models and textures and yet the lighting and general graphical design makes it look lovely and atmospheric, especially combined with the music.