What can be done to prevent MacBook Pro from being recognized as a mobile device?

My macbook pro M3 pro (Sonoma 14.5) freezes on certain web pages when I click on the checkboxes on that page.

I have also think that another page thought my Macbook was a mobile device.

I do get a notification that my macbook pro has been left at work, similar to a notification I get when I leave my ipad at work.

How do I stop it from behaving like a mobile device? Should I stop it or is there a setting I can click while in Chrome or Safari to make these two web pages think I am a laptop?

Thanx in Advance

[Re-Titled by Moderator]