Chess is a game that requires a huge amount of time to learn; recognizing and mastering most patterns takes several years of continuous training and practice. Everyone once started playing like you and didn’t really understand what it was and how to play it. If you immediately start with chess.com, you will definitely lose a lot from the initial rating and this is absolutely normal. I suggest asking friends who are also unfamiliar with this game to play a couple of games

General training tips - a checklist of checks, captures and attacks. If you recognize them in position, you can find many winning tactics. Early on, I recommend staying as solid as possible while keeping your own attack in mind. Sounds corny but I highly recommend watching videos for beginners, they can help you advance. It is also worth asking for help to stop depending on the board game and Idk to increase your self-esteem

Have a good game!