How do I get a high rating?


You should read books. For starting out I’d recommend a book called “Learn Chess with Bobby Fischer”, it’s very good for beginners and it’s unique from other books. After reading that book I’d recommend looking at an article about “The Opera Game”. This game is the one of the best ever played and Morphy shows off every aspect of chess with 17 out of his 19 moves being forcing. Before I get carried away, you should also try Capablanca’s book, it’s very good for intermediate and advanced players
Good luck!

LOL

if you're 400 and you're still losing the majority of your games chances are you don't deserve a high rating

If you really want a useful answer, you have to first tell us your age! A 80 year old improves in a different way as a 8 year old... and a 50 year old different as a 15 year old...

Dear Puppypawspizza,
I am a certified, full-time chess coach, so I hope I can help you. Everybody is different, so that's why there isn't only one general way to learn. First of all, you have to discover your biggest weaknesses in the game and start working on them. The most effective way for that is analysing your own games. Of course, if you are a beginner, you can't do it efficiently because you don't know too much about the game yet. There is a built-in engine on chess.com which can show you if a move is good or bad but the only problem that it can't explain you the plans, ideas behind the moves, so you won't know why is it so good or bad.
You can learn from books or Youtube channels as well, and maybe you can find a lot of useful information there but these sources are mostly general things and not personalized at all. That's why you need a good coach sooner or later if you really want to be better at chess. A good coach can help you with identifying your biggest weaknesses and explain everything, so you can leave your mistakes behind you. Of course, you won't apply everything immediately, this is a learning process (like learning languages), but if you are persistent and enthusiastic, you will achieve your goals.
In my opinion, chess has 4 main territories (openings, strategies, tactics/combinations and endgames). If you want to improve efficiently, you should improve all of these skills almost at the same time. That's what my training program is based on. My students really like it because the lessons are not boring (because we talk about more than one areas within one lesson) and they feel the improvement on the longer run. Of course, there are always ups and downs but this is completely normal in everyone's career.
I hope this is helpful for you. Good luck for your chess games!

If you really want a useful answer, you have to first tell us your age! A 80 year old improves in a different way as a 8 year old... and a 50 year old different as a 15 year old...
It's easy to tell OP is a kid.
Name, pfp, other topic titles...
But I don't think the method is very age dependent.