It's not. At your stage in playing there are two main concepts you need to know. Tactics and Opening Principles. You can train your tactical knowledge by doing puzzles. A LOT of them. Opening principles are easy to find with a quick Google search. And they are absolutely neccessary. When I started I was middle 300 level when it all evened out. I'm approaching 1300 and those two things and my coach helped get me there. If you can't afford a coach, the other two things you can look into on your own.
Chess is an extremely difficult game to get "good" at. It takes a long time and a lot of study. I will say straight up 300, 400, 500 etc are all pretty much the very beginning of being a beginner. What I mean by that is I'm approaching 1300 and I still feel like a beginner even though I'm approaching an intermediate rating. It's going to be years before I am where I want to be. But thankfully, chess is also fun and challenging and really forces one to dig deeper. And I enjoy a good challenge.
Good luck, friend.
I dropped to 100, then got back up to 300 pretty easily, but 300+players are tougher to beat.
How hard is it to work my way up to 500 for rapid chess?