Issues of Macbook Air M4

I recently purchased macbook air m4 base model and update into macOS 26.1 which is the latest software update right now. After few days of using it, i have experienced the automatically typing letter "B" when i try to type something using my keyboard. Whenever i type a letter the letter "B" is automatically typing on the textbox/searchbar. Also sometimes, i experienced an annoying sound occured from the speakers when i try to type something. That sound is like warning a sound and it plays repeatedly. How can i fix these issues? Do these are the kown bugs or something that occurs because of the latest software update? Video/Audio Evidences