Why am i not improving

I don't know why but i play on both Chess . com and Lichess and i find myself struggling to get better in fact i played so bad on lichess i legit closed my account. I feel like no matter how much i play i don't get better and to be honest i feel like putting chess down for awhile. Maybe you guys can give me tips on how to get better or advice would be nice

That could be the first sign of improvement.   You've improved enough to recognize some of your problems and what you need to do.

So what are you doing to improve?  Have you read any chess books? Taken any lessons?  Done any drills?  Watched any titled streamers?

I have read some chess books and i usually hikaru or Naroditsky but thats about it 

Study the games of great players from the past. Pick one player and study as many games as you can. That is the best way to improve.

Stop playing blitz (and bullet,) until you've improved. That's a good place to start. As ever, I'll say watch John Bartholomew's Fundamentals and original Climbing the Ratings Ladder videos. He talks a lot about good principles, and explains clearly... It's free. Do puzzles for tactics. Join a club and do vote chess. Higher rated players will explain their thinking in the chat, and you can see a range of standard openings, so they're not always surprising you. 

#1
A rating of 690 is a sign of frequent blunders.
Always check your intended move is no blunder before you play it.
It is a little mental discipline.
Sit on your hands.
Hang no pieces, hang no pawns and you are 1500 overnight.

@op do a lot of tactics too, puzzles , puzzle rush etc. Memorize tactic patterns, by repeating the ones you fail to solve

Do tactics daily, and I promise, you will see improvent within a week 

Play rapid as I was the same. I wanted quick games, but you don't learn much as soon as I played rapid i got better and analyse your games even if you lose 

Thank you guys for all the advice i will take every note into account. 

just do more puzzles

Watch the first two videos of this series. Especially the first one is helpful for beginners:

I myself struggled when I started playing chess. I played so much that I developed "Tetris syndrome", I started seeing hallucinations involving chess. But no matter how much I played, I didn't improve. Then I took a 6 month break from playing, and suddenly my ELO soared. I was told by an expert in neurology that it's because I let my brain rest. Don't exhaust yourself!

Also, don't play bullet or blitz, you should play more classical games so you start to develop deeper insights (which could be used in bullet/blitz games later on). You should also only play in classical style first (control the center, develop your pieces fast, knights before bishops, castle during the first 10 moves...) before moving on to more modern openings.

Especially games you lose!

Improving Your Chess - Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond

https://www.chess.com/blog/RussBell

it's really not a tip but a "doorway" for you to improve, is you need a personality change, right now you're as normal as every average American citizen who enjoy DC movies, loves the company of friends, family, schoolmates.

you need to experience life of solitarity, "to empty your cup", you must be embittered, isolated, deprived of vanity opportunities, then you will soon develop or respawn a new personality, capable of understanding the deep intricacies of a chess, not just simply a game, but an art, a passion, a calling where every move you make almost resembles the styles of previous generations of great grandmasters before you.