Disable share my location on iPhone SE

No I do not; also thought about something like watch etc linked but I don’t have one. I do have an iCloud email that goes into my gmail email acct. but don’t see anything with this.

I really think someone else is following my phone...me!!!

Any other advice or ideas on what could be the problem or where to go & what I should do going forward? Id appreciate

Any suggestions & help out there. Thanks