in my experience i didnt have netflix in both roms so i had to sideload, but you'll see for yourself if the app wont be available you can download it from apkmirror
also im always glad to help and im happy that you got your phone now!!)
there's a lot of functions in the camera dynamic shots basically takes multiple shots which mostly you wont need it so i recommend turning it off, ass for the other stuff for the start i recommend having AI mode on, hdr on auto, enhance imagequality on, watermark off and thats mostly it, if you want you can try and play wiht the settings to see which things suit you the best)