What is the BEST Game Engine? Unreal? Unity? Godot?

There is no single best game engine. Unreal, Unity, Godot, and other engines are all excellent tools capable of building any game you can imagine. Examples like Deep Rock Galactic (Unreal), recent indie titles (Unity), and Dome (Godot) demonstrate this versatility. The key advice is to pick one engine and learn it deeply rather than jumping between multiple tools.