how to turn off iphone 11 if screen is cracked

Thanks for the responses to my plea for help... :-)

I ended up getting the screen fixed locally and there was no need to turn off Find My iPhone.

Anypats -my screened was cracked and I couldn't activate the top options on my phone which is where Find My iPhone on and off is located. I could maneuver around the top of the screen in other apps because I could turn the phone sideways and access those options. However, in settings you can not move the screen from portrait to landscape. I had to use my computer to turn Find My iPhone off and it instructed me to turn the phone off so it could update the software. (I'm not a tech savvy person so I'M *** U MEING the update software part.)

Thanks again!

It still brings up the bar that you have to slide to turn off.

To complete turning off Find My Phone so I can send it in to get the screen fixed.