If you've contacted your network provider to register the phone as lost they will have imei barred it so the phone won't work thus it won't connect to mobile data so can't be tracked.
I fear you maybe wasting your time trying to track it I'm afraid.
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 2.5/ Android 10.
I was at my service provider's and they said there wasn't much they could do. Just have to move on I guess...
I just feel there should be a premium service, monthly or annual subscription, that guarantees that stolen devices would be returned to the rightful owners. Like once the device is registered to an account even if it's hard-reset, Samsung could still trace the device and hand the information to local authorities. Because "find my mobile" is for miss-placed phones, not stolen phones.
I would be more at ease to get a note 20 Ultra or the next best thing if I can be guaranteed this, but for now, my old note 4 would suffice...
Thanks for the help