Making a game is hard, and there is a lot to learn in Unreal. It won’t be easy whether you use Unreal, Unity, Godot, or Realmcrafter. You can make an RPG in it if you want though. It will take a while.
I use Blender. It is free and pretty good.
There is a steep learning curve to Unreal. The sad thing is, whatever game engine you use, you probably won’t finish your game.
Documentation is bad. Tutorials explain things better.
Good luck.