Unexplained marks appearing on M5 13-inch Mac screen

Can anyone advise please? I’ve had my M5 13 inch Mac since April 2026. The past few months I've noticed these little marks come up (the one photographed at the bottom of the screen is the worst, there's also one that looks like a smudge but doesn't show up on camera!) I only clean the screen with a dry microfibre cloth and don't eat over it or have greasy fingers when typing so I'm not sure why this has happened?

I can't get to an Apple Store very easily so wanted to ask here first if anyone has experienced a similar issue?

Many thanks - Caitlin x

[Edited by Moderator]