Stolen iphone
How can i track a stolen iphone with the find my iPhone off
iPhone XS Max, iOS 13
See the following from If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support
Find My [device] is the only way that you can track or locate a lost or missing device. If Find My [device] isn't enabled on your device before it goes missing, there's no other Apple service that can find, track, or flag your device for you.
There are some other suggestions (e.g., changing passwords) in that article that may be of interest.
