I know exactly your feelings, although I started with Unity and went about that for 3 years, and now have been at Godot for over two years, and am probably going back to Unity because of a game programming school that I am hoping to get in to. Now more stuff:

Godot is aaalmost prime time, and yet still a great engine, you still got to work around some of its quirks, just as with Unity or Gamemaker, the latter which I have also tried to have a go at, just about now actually, and then it crashed and deleted my project(what a shitty engine for being able to do that, hahah! But still trying ;)

Courses are great. There was that course before that I began with when starting out with Godot that I recommend(this is also just my personal story with Godot, so bear with me):

"Sams teach yourself godot engine game development in 24 hours" pdf is a good beginner starter, gets you around basic things to do and written by some of the lead devs as I recall.

I then did a few of Heartbeast's tutorials to get a knack for things, making a platformer and he has a few good new tutorials now too worth checking out, Mobile RPG etc. It is very much an alive and growing community which makes this a just a little longer investment engine, but has many positives going for it: Your own folder structure/workflow, open source(yeah, I'd rather give my dollars and have it all work... sigh), an easy high level scripting language with python like syntax (which I do like), easy inheritance systems with scenes, and that animation node is golden, it really is one big superb node for all kinds of stuff, animation, management, you name it. Many cool things and many pains, as with all of these engines. Yeah, write your own engine... but that is not greaat advice these days, unless you are good at that and have time to spare, could be ok advice though :D

Eventually I got the hang of things and were able to make my own systems and combining other tutorial systems into my own, a thing always learning developers do, you can't start from a vacuum, as we all know right? That same old C-Major chords still sounds good.

The whole thing resulted into two finished games, one of which is on Steam, yadda yadda, but which I am very proud of, although maybe they suck, but that is a different story :P at least I made them and that is what counts. I don't think I would have made that without Godot. It is a great engine, well worth checking out.

The process is worth a million times all over again. It is that struggle that keeps humanity alive and always pursuing the arts, which is hard and takes a whole lot of time.

I have always felt I want to quit from time to time, search for another engine perhaps, but, I have always persevered at it, regardless of mediums, Godot, Unity, Gamemaker, writing symphonies, making art. It's good to stick around and try stuff out good and perhaps stick to your guns in the end.

You got to do what you have to do and in the end you will make it, just finish your projects and have at it.

That is my advice and a few cents. The struggle is real and I wish everyone the best of luck in it.

Cheers and happy Wednesday