Need help on my thinking process.

Hey all, i want some help on my thinking process. I just played a game (which I lost because of classicaly blundering my queen). However, I feel like I have made lots of mistakes during the game and white even got an advantage of +5 while we had same material. I have annotated my game and I wonder where I could improve (basic fundamentals, positional play, etc) I look forward to your suggestions! kind regards

...c5 push is not good, allows white bishop tempo check, should have developed dark square bishop and castle short, securing your king.

Instead, you placed you king on the exposed queen side, with weakened pawn structure.

Such king is very weak and easy to attack.

So you need to develop your pieces better, castle timely, but especially pay attention to king safety.

Kings without friendly pawns nearby are bad, can easily cost you the game.

Weak king is HUGE penalty, some full three pawns material.

Slow development.

Badly exposed your king on the queen side with not friendly pawns nearby.

heya just make sure the place you move to has no attackers and/or check every piece to be safe i would recommend flipping board as it makes it easier

Improving Your Chess - Resources for Beginners and Beyond

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

Good Positional Chess, Planning & Strategy Books for Beginners and Beyond...

https://www.chess.com/blog/RussBell/introduction-to-positional-chess-planning-strategy

Thanks for the input, its now clear to me that the match was already decided in the beginning due vto lack of development and a weak king. Looks like I should focus on development first before pressuring the opponent

That is useful to hear, looks like I overcomplicated things in the beginning before setting a stable position. looks like i got even lucky since my opponent didnt attack earlier.
yeah I got inspired first by one of Levi's videos and decided to investigate further, I saw Botvinik used to play the c5 line and since then I try to implement these kind of lines aswell (im nowhere near those levels tho). Thanks for explaining to me the less obvious

Development and King safety are lacking in the game. If put these concepts you will win some games at your level.

I played this game today, and also lost my queen with not seeing a tactic. However I got saved b the clock. I also annotated this game so you can see why i made certain moves. I believe the main mistake was in moving the knight on move 20. The plan didnt work out since my opponent got a king side attack. What plan should I have made here?

Thankyou for the insights above. It had really good points in what I can change in my game (for example the bishop to b2, I wanted to defend my pawns, but in reality I lost control over the kingside). Also I should determine on which side I want to focus, otherwise the opponent will ruin me, in this game it was the kingside.

I have one last game if you arent tired of me haha. It was kind of a frustrating game since I knew I had chance. But my opponent managed to take advantage of my mistakes, and I didnt really know what I had to do in this game other than to trade and use my passed pawn.

Do not know how to work with your rooks? Study following masterpiece.

Capablanca sucked at chess, nut Nimzowitsch sucked even more.

Only Stockfish plays about perfect chess.

Don't waste time on chess champions, make too many mistakes, simply grab Stockfish for careful move by move analysis.