I lost my samsung j7

I removed your IMEI number fro the thread title to pevent someone else claiming the phone.

Only your Service Provider can help you and they may be able to tell you where it was when last turned on. You also need to notify them of the loss because you are liable for any bill the finder or the thief is running up in mobile data and calls.
 
All the help we can offer you are in the post I put up after the first post above.

We can only suggest things to do but the company you pay for your signal can do a lot more.