How I can improve my chess skills ?

Practice a lot by playing games. In order to improve you should analyze every single game you play, figure out what was your (and your opponents) mistake which cost you a win. At some point this wont be enough. When you see your improvement stoped you need to pick one or two opening for both colors and work on them. At first you will only need 5-6 moves and as you improve so should your opening knowledge. Do puzzles daily (minimum 25 per day). You shouldnt avoid endgames either. I suppose you already know basic checkmates. Look up some endgame principles such as rooks belong behind passed pawns, activate your king, etc... This alone should help you to get atleast 200 points.
A rating of 928 is a sign of frequent blunders. Always check your intended move is no blunder before you play it. This little mental discipline alone will get you to 1500. as long as you hang pieces and pawns all other effort is in vain.

Dear WxGxFx,
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 games!

Here you go, all the tips I have for you:
https://www.chess.com/blog/nklristic/the-beginners-tale-first-steps-to-chess-improvement
Good luck improving your game.

#1:
1) Play 2-3 15+10 games per-day.
Those games give you time to calculate and improve your understanding of what makes "Good moves" in chess.
They are also not *Too* long, which is a positive.
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2) Pick 3 solid openings (For example: caro-kann, reti, Italian, queens Indian, etc).
1 for white. 1 for black against e4. And 1 for black against d4, and play exclusively those across all time-controls, as to accumulate experience.
Don't switch openings unless 1 you are currently playing just isn't working, yet you have played it for a while. (In that case: Something is wrong).
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3) Study endgames before everything else.
The best reason is: You have a much higher chance of winning an endgame having come out of a worse opening and middlegame than your opponent if you are better at endgames, but you have a much lower chance of winning an endgame having come out of a better opening and middlegame than your opponent if you aren't better at endgames.
You should watch videos about endgames on YouTube---these are some good ones to start with: https://www.youtube.com/watch?v=XZeTKbB_LWg https://www.youtube.com/watch?v=mCsc24k-Q8M https://www.youtube.com/watch?v=JMZJ9P2Hnq0
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4) Do 10-15 puzzles per-day (Or 5, if you don’t have a membership),and get your puzzle-rating high enough so that it exceeds your desired play-rating.
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5) Don't play when you feel bad, tired, tilted, etc.
If you do: Your calculation-ability will suffer, and you won't improve as a result.
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6) If you can't think well, find a purpose behind your moves, etc. then you are likely not in a good state mentally.
A good solution to that is to take a hot bath, or a walk, which will clean your mind.
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7) Just try to have fun.
Having fun is a great way to improve, because if you don't have fun: You won't put in much effort in the games you play.
I'd like to add something: Play through ANNOTATED MASTER GAMES, preferably of the old masters like Capablanca, Alekhine, Rubinstein. Either you get a copy of their annotated game collections, or you watch a YouTube video (Agadmator did a lot of those) and you play the game yourself on a physical board and try to understand the moves the master played. You'll get a better feeling for where to put your pieces.
I want to improve my chess skills but I m not really sure how. Can you help me ?