MacBook Air M3 - problem with keyboard marks on the screen and abrasions on the keyboard

This is my first Macbook, which I bought about 5 months ago. From the beginning, I noticed that it had an unpleasant problem. The keyboard keys left marks on the screen. From what I've read, this happens quite often and if these marks can be cleaned, then it's simply dirt that settles on the screen. Unfortunately, I've now noticed that under strong light, there are some strange dots that are impossible to remove. They look like a dust. There is also a visible mark from some corners of the keys, as well as the space bar. These are very, very delicate marks that are not visible in normal light, but I'm worried that I can't remove them. If this happens after half a year, what will happen in the next half? Have you encountered anything like this in Macbooks with M3? Is there a chance that Apple service will do something about it? I only have a basic 1-year warranty.

The second thing is the already visible abrasion on the keyboard. It's strange to me that such a problem occurs after half a year.