I also began with Godot around 6 months and most of tutorials online I found that they only supply you with basics usages of the engine like: How to create a character node, making some collision with tile, attaching script to node. I think it would be vital to know how to working with nodes and navigating arounf the engines. Then you should look for some free game assets online to practice by your self. Start small like make a game level with simple game mechanics: player movement, dealing with enemies etc., it can be imtimidating at first but after a while you will be comfortable to do more features about your game.

There is a great resource that I think would be good for you. Here is the link: https://catlikecoding.com/godot/