you will not need a new phone.
I treat my android phone like it is the most unsecure computing device I have (it probably is)
I do not have a google account so I have very few apps (only the ones I sideloaded from .apk files)
I do not access anything to do with money on my phone
Mostly I use it for phone calls and texts.
I would be afraid to see what kind of dangerous stuff is on most peoples phones
“I do not have a google account so I have very few apps”
250 non-system apps on my phone including a few side-loaded ones.
Don’t you need a Google account to use an Android device? We were told that was necessary.