The answer depends on your goals. If you want to expand your knowledge of Unity you might want to check out our epic Complete Unity Developer course.
If you are sick of Unity and want to make a lateral move to apply your knowledge to a new game engine, take a look at the Unreal Course.
For those interested in 3D modelling, our Blender course is the place to go.
You can always see all our courses here.
Ben & Sam