Hi Tom, have you tried the drills section on this site, or the basic lessons? It should help with recognising what is happening in a game and what you should be doing. Your last game for example was ended with you not recognising and responding to a mate threat. Just some practice should help.
Can someone help me to improve?

Olá!
Here I post on how to develop your chess skills:
https://www.chess.com/blog/maafernan/chess-skills-development
Good luck!

I've written several posts aimed at helping players like you who might not be able to afford a coach. Here are some links to those posts:
1. How to Improve at Chess: Ultimate Guide
[https://www.chess.com/forum/view/for-beginners/how-to-improve-at-chess-ultimate-guide]
2. Jumpstart Your Chess Journey: Proven Tips for Beginners [https://www.chess.com/forum/view/for-beginners/jumpstart-your-chess-journey-proven-tips-for-beginners]
3. From Good to Great: Mastering Piece Arrangement on the Board [https://www.chess.com/forum/view/chess-lessons/from-good-to-great-mastering-piece-arrangement-on-the-board]
4. Dominating the Board: Mastering Aggressive Moves in Chess
[https://www.chess.com/forum/view/general/dominating-the-board-mastering-aggressive-moves-in-chess]
5. Outsmarting Opponents: Creating and Exploiting Weaknesses
[https://www.chess.com/forum/view/general/outsmarting-opponents-creating-and-exploiting-weaknesses]
6. Piece Domination 101: How to Neutralize Your Opponent's Forces
[https://www.chess.com/forum/view/general/piece-domination-101-how-to-neutralize-your-opponents-forces]
7. Mastering Piece Trades: Transforming the Chess Battlefield [https://www.chess.com/forum/view/general/mastering-piece-trades-transforming-the-chess-battlefield]
8. Practical Endgames Demystified: Techniques for Victory [https://www.chess.com/forum/view/general-chess-discussion/practical-endgames-demystified-techniques-for-victory-95628525]
I hope you find these resources helpful in your chess journey. If you ever feel like you'd benefit from personalized coaching, feel free to reach out to me. Keep up the good work and remember, every game is a learning opportunity!

Would anyone like to maybe watch me playing or adding me as a friend to give me some advices about how I can improve?
We could play live unrated chess sometimes and I could offer some advice
Would anyone like to maybe watch me playing or adding me as a friend to give me some advices about how I can improve?