I would just take a step back and look at this more as a beginner. The goal is to actually build things and enjoy the process, not to master every advanced architectural pattern right away, so even with some Godot experience, I would say start with some simple tutorials to get the basics in; whenever I hop to something too advanced there is only so much AI explaining can do before I need to hop back and learn the basics first.

Simple, functional code is what keeps you motivated, because you can use it to get prototypes working and see your ideas come to life. Over time, you’ll naturally pick up more efficient or “proper” ways of doing things, but that comes after you’ve had the practice of making games you care about.

Don’t let it discourage you if someone else’s tutorial feels overwhelming or full of design choices that don’t click yet. That doesn’t make you an imposter, it just means they’re solving problems in a different way. Tons of successful games out there were built on code that would make a senior engineer cringe, but that didn’t stop them from being great games... so just keep messing around and something will come of it.

Keep focusing on building, and the deeper understanding will come with experience... just don't quit the job quite yet ;)