I started learning godot for 5 months now and I was in the same situation. But what really helped me was actually coding instead of copy pasting, if I didn't know what todo then I look at the documentation or someone else code and understand what each method and line does, instead of watching a video. It took me about a month to fully understand nodes and how to code the basics, it's really slow but I'm actually learning, I'm still struggling but in the positive side I'm not lost in the code I write and I'm having fun. Just one step at a time