can’t get past 400 elo rating

It's mostly about following key principles when playing. That approach helped me reach a 2000+ rating, and I teach others to do the same. You can learn them yourself as well. Here's an example of some chess principles: https://www.chess.com/article/view/principles-of-chess

It's ok getting better at chess takes time you should watch video lessons or read some tips

The usual:

1. Playing only speed chess. You're not giving yourself time to think.

2. Moving too fast. You're leaving a lot of time on the clock in your losses.

3. Youre hanging material and missing simple tactics. Again, youre moving too fast.

i've recently reached 400 elo, what i did was watch some youtube videos and do game reviews!

In your last losing game, you hung your queen because you thought you had checkmate. You then traded your rook for the capturing knight. This only compounded your material deficit. Lopsided trades like that are never a good idea unless you have a specific idea in mind. It's rare to find a scenario in which it would work where I am at 600 other than a simple back rank mate.

You weren't intimidated by the early queen attack in your most recent game. This bodes well for you if you want to get to 500 or higher.

Mate, I know how you feel

simply make a new account and start with the highest level and you may get 2000+ elo (idk if its work)

I reviewed a few of your games and came to the simplest conclusion on what you need to do.

First and foremost, pay attention to hanging pieces. Do you have any? Do they? Don't move before you have identified Hanging Pieces.

1st Game - Resigned.

You missed taking the opponent's Queen on 4 consecutive moves. The first is understandable given your current level, as it resulted from a forking tactic (King/Queen) with Knight. But you attacked the Queen with your pawn, then failed to capture it on 3 consecutive moves.

2nd Game - Resigned

You missed capturing the opponent's Queen on Move 3. Later on, you missed a hanging Knight, and they took your Rook on the next move.

Openings: Learn an opening for White and Black. Go onto YouTube and get the basic main lines for 1 of each. For Black, at least do the Kings Indian Defense, which is simple to execute. Then try the Caro Kann. For White, there are so many, I recommend the Vienna.

Knowing an opening, you will repeatedly see many of the same responses and thus, learn a little at a time what to do when you see the most common responses and bring a degree of predictability going into the middle game. Right now, you're making moves that are all over the place.

Tactics Training:  Go on Chess.com learning and do some of the tactics trainings. Learn about Pigs on the 7th Rank, Discovered Checks, Skewers, Pins, etc. You aren't going to get better unless you do some work to learn the game outside of playing the game.

i wouldn't think to much about rating on this website, as the opportunity to force an opponent to play a line which the player started and is specialized in from white advantage allows greatly higher rating than is correct.