I‘d strongly argue against a point n shoot or phone camera.
A 'proper' camera can be just as easy to use (just put it in program/auto mode) and isn’t much more expensive either, if you go for something older and used, which is all a 12 year old beginner needs anyways.
The versatility also allows and encourages experimentation, and having an actual camera in your hand gets you in a very different mind set than just snapping away on your phone.
Not to speak of the quality difference even an older DSLR has, compared to the tiny sensor of most cheaper point n shoots and even most modern phones.