The Nightmare Kids Thread

Good friends. I'm wanting to start a 3D Children's Horror game on Godot because it's the lightest game for my PC. I have a script but I don't know anything about developing the language presented even more in 3D. I'm just a developer of engines like Mugen and Openbor. I'm wanting to take my first steps towards 3D. Unreal is very heavy and should have a driver just for it to make games despite making quality games, Unity is charging you to make a game and Blender removed its Game Engine. So, all I was left with was Godot.
The Synopsis of my script is based on the nightmares I had as a child. But I will put characters to represent what I went through.
Once upon a time there was a family in which the father was a pastor and had a daughter. People who didn't like this pastor used black magic to destroy him, but the spell didn't work, but it affected his daughter, who began to have dark nightmares as if she were actually in that world. Then despair and the dark environment begin to take over the girl, and these nightmares are where the Gameplay takes place; Meanwhile, her father begins to wage a spiritual war alongside his daughter who is in her bed trapped by an evil entity in the dream. So guys, this is one of the summaries presented. The game will be desperate and dark at the same time until the girl's father, with his faith, can free her from the evil entity. After we work this out, we will give names and pluzes with an elapsed time. I hope you like it and I hope to make a team for development. Thanks!!!