Hello Camitt721,
Thank you for using Apple Support Communities! We see that you have a question about the location changing for a person using what sounds like the Find My app. We'd be happy to help provide more information.
The locations that you see are determined by a variety of factors such as cellular, Wi-Fi, GPS networks, and Bluetooth for the device you're trying to locate. When the device is connected to Wi-Fi in particular, it can be normal under certain circumstances for the location to change based on the IP address for the Wi-Fi network:
About privacy and Location Services in iOS and iPadOS - Apple Support
Additionally, you may be seeing the location bouncing around as described due to the following:
If Find My Friends isn't working - Apple Support
"If the location circle is too large, wait a few minutes, then try again. The device might be determining a more accurate location, or it might not be able to provide a more accurate location. This can happen if the device is indoors with no known Wi-Fi base station around."
Cheers!