Other devices seem to be listed but I only have one device the iPhone 11

My iPhone is 3or4 months old l bought it new a iPhone 12 is listed as a false device

checking my Google account it list sessions

2 sessions to be exact both from iPhone 11 but one will read Texas

the other USA

set up like this

iphone11 this phone

Texas.

and

iphone11

USA

plus a laptop will be listed I don’t own a computer

I only have the iPhone 11 l purchased new

someone else is changing passwords while I’m working & phone is locked up this happens

I can’t have a account with having to get a new password most everytime

i threw the numbers that came with the phone l had the verzion store destroy them

trying to keep the hacker away but it did not work please help