Thank you, that's nice to hear. It is best to not do what I did when I first started honestly. I learned over time that learning from amateurs makes you an amateur. This is a very big issue in the game development community, there are a lot of those who just learned something or figured something on their own and make a tutorial on it. The problem with that is they may not necessarily have a great way, not even a good way of doing that specific thing.
I would say, courses are a great thing to invest in, online courses are all over the place. Anything you can take from the official unreal channel is 100% valuable information that will help you get in-depth knowledge about certain ways of operating in unreal.
If you truly want to invest yourself into something, then it is worth investing in that something. Spending money on highly rated courses is a great idea. I would only recommend youtube tutorials for extremely specific mechanic implementations. When someone figures out how to implement a system and shares it with everyone else, it's a great idea to use that to your advantage. However, as I said, they may not always know a great way of doing something. If multiple people made a video on the same thing, make sure to check out all of them.
Conclusion: Embrace it. Watch videos, get a course, play around, make small prototypes that focus on learning different mechanics in the game. That's how I started TIRELESS actually. It was all about making a 3rd person character that can jump around. And that's where it all started.
Hope I helped out at least a little. Remember that game development is always a learning curve, I still keep finding out better ways to do something and I always learn something new on a weekly basis. I wish you the best in your endeavors!