It kinda depends on what your goal is. I tend to point people towards iphones in this situation because they don’t attract attention and can be easily secured. If you absolutely gotta have Android the best choice is a pixel with graphene. You gotta make sure the bootloader and carrier are both unlocked so you can install graphene though, so that’s something to navigate.
You said elsewhere that you don’t use eBay because of their age verification. It may be worthwhile, if you are underage, to think critically about what you’re trying to accomplish here.