I’m a huge nerd so take everything with a grain of salt how my experience translates to a non-techie.
Storing and playing music with Android is pretty straightforward. You just copy your music into the music folder. Then use either the media player your phone comes with or choose one of the 1 million other options on the playstore/f-droid. But i never liked Itunes to begin with. Not with the Ipod i had 20 years ago and not with the Ipad i had 10 years ago. It just gets in my(!) way of how i want to do things. If your whole music library and management revolves around itunes… uuh yeah, idk its going to be a new learning experience i guess.
Good quality camera shouldnt be an issue. Especially coming from a SE. Look up Samsung/Google/Apple camera blindtests on Youtube. The differences are minuscule and mostly about how they handle whitebalance (yellowish/blueish tint) and how pronounced the contrast in the shadows is. The UI of the camera will be different. But if you just point and shoot without needing more advanced settings it will be just fine.
If you want to use GrapheneOS or a custom ROM in general: Buy a Pixel and flash GrapheneOS. If your not a nerd other custom roms will be a huge pain to install. Graphene has a pretty straightforward web based installer which guides you through the process. The cheaper “A” models had pretty often issues with their batteries. But atleast Google just reimbursed everyone in those cases. I’m still on my Pixel 7 and i dont see any reason to upgrade until its support ends. Camera is still great, performance is still great, screen is great, battery life is okay. Choosing anything between 8-10 series Pixels should be just fine. Older ones have a shorter support period. Newer ones a slightly more expensive and a bit better. Pro models have a bit more ram and a telescopic camera for more zoom. Nice to have but i(!) wouldnt pay extra for that.










All Pixel phones with Tensor SOCs have “AI” Chips. So even the Pixel 6 and 7 come with a NPU.