You’ll become proficient in all of that with time and practice. I used to think that my skills leveling up of was a matter of needing to watch the right course with the right information, one which would give me a one liner tricky and that was it, do this, click here and there, and this is the trick for your renders to look awesome. In time I started to realize that it is much more subtle than that, there a gazillion choices your brain makes as you’re doing an artwork, and to make each one of those a right choice is a matter of practicing a lot, developing your eye, mind, intuition, etc and that takes time and practice. So keep watching tutorials and getting hands on Blender a lot creating your own stuff. They might not look too good at first even you doing exactly what tutorials say, but in time and with practice you’ll start to level up and doing awesome things.
