Mobile layout not being used on website

Why doesn’t my website us the mobile layout that I created? I am not sure why but when I scale down my window browser to a mobile size or inspect it at a mobile size the layout I created is not being used. It defaults to the desktop layout. Can anyone direct me to a resource or know the answer to help?

it only switches to the mobileview if you are using an actual device.

Is their any way to make the the desktop go to mobile if someone is checking to see if the sight is responsive over a desktop web browser?

It only swiched to the mobileview if you are using ab actual device