If you’re using their wifi they can probably just see you.

If your parents have access to your phone they could have enabled location sharing. That’s easy enough to check.

You say you share providers, does that mean the phones are on the same account? If that’s the case, get your own account.

You could always just do a factory restore if you think they fooled with your phone.

You can also see if there are any airtags that don’t belong to you. There are also apps to detect any trackers near you like Tile.

You can check your OBD port to see if anything is plugged in. If you find something go to the police if you’re the legal owner of the vehicle.

You can also switch off Bluetooth on your phone and check your apps to see which ones are tracking your location.

If you find evidences they are tracking you without your knowledge go to the police.

Unless of course you’re a minor and you’re not telling us something.

If you are a minor trying to run away because you’re in danger please seek the help of a trusted adult like a teacher, or relative.