How do I analyze my game?

Today, I saw a reply on a forum post saying that beginners should learn from their mistakes by analyzing their mistakes in their games. It also said that you should not rely on the chess.com machine learning analysis and that you would improve more if you analyzed the game yourself. How do I analyze my games? Here is one of the chess games that I would like to analyze:

download the Analyze This app from google play store- completely free;

download this game's PGN file open the game with analyze this and start the chess engine.

It would analyze your game on the spot

The forum post I read said that I should analyze the game myself rather than use an application or a program to analyze for me, as it would help me improve my skills much more. That is why I specified that I didn't want to use chess.com's analyzer because it analyzes it for me and tells me which moves are bad rather than how I can improve.

Also, I know that a lot of chess masters analyze other games and their own games to improve rather than using a program or application that helps you find bad moves.

This is something a quick google search will quickly lead you to the correct answer. A quick gist would be to make notes on what you were thinking compared to what you did, why didn't you choose the other thoughts? Look for critical junctures in the game where you either had a lot of thought/dispute on your moves or where the plays had a large impact on the game. From this, look for useful information this analysis provided, about why certain moves did or did not work, expanding from specific issues general ideas that you can repeatedly compare as you continue analysis. 

A few links below from people who wrote on the subject, I found these with a brief google search. 

https://chess.stackexchange.com/questions/188/how-do-i-analyze-my-game-after-playing

https://www.chess.com/article/view/how-to-analyze-chess-games

https://www.chess.com/blog/CharlyAZ/a-hardcore-guide-to-analyze-your-chess-games

Thank you very much!

Np

After a brief look at your game, I had a few questions. Perhaps you will find these decent places to look at for where your thoughts lay and how you could have done better.

After exchanging queens on the 12th move, why did you take their queen with your pawn instead of with your white squared bishop? It would have gotten your bishop out and left your pawn to protect your pawn structure. It also would have allowed your king to castle behind your barriered pawns on the right side of your board instead of leaving your king wide open on the left.

On move 16 your knight attacks their knight, but in doing so opens up the pawn on d4 to simply be taken by the very knight you were attacking instead, putting you down a pawn for nothing. Your opponent missed it and exchanged knights. 

At the end of move 20 their rook attacks your pawn on d4, why did you move a random pawn up, allowing them to take your pawn for free? You instead could have had your bishop move to f3 and attack their pawn on b7. You could have moved your king to c3 to protect the pawn on d4. etc.

At the end of move 27 their rook takes control of the d file, threatening to move to d2 to out your king in check and take your bishop, which they did. Why did you not move a piece to control that square, the king to c3 keeps the king on black to avoid any issues with the bishop, defends the square on d2 to prevent the rook getting in there, and removes your king from sharing a straight line through which an opposing rook may eventually seek to trap the king and bishop on. I would say upon losing the bishop the game more or less ended for you, as your pawn structure was easily torn apart by their attacks and your rook did little but attempt damage control, and eventually was just moving about.

Wow, thank you very much for that analysis. I noticed the first three when I was analyzing but not the last one!