disclaimer: I don't use or own an iPhone. My wife does. For me, iPhones just do not work, I get annoyed approximately 5 seconds after having one in hand.
For GMail management - find a PC/Mac/Chromebook, something with a real browser, go to gmail.com and get your stuff sorted out in minutes.
For getting off the phone before sleep - no idea about iphone, maybe just set a calendar reminder? On Android, use Digital Wellbeing app.
Unless you keep your iPhone glued to your person at all times, Alexa (or Google Home, etc) is much better for mundane things like saying "Alexa, set 11 minutes pasta timer" right from the kitchen where you just put the pasta in the water, or asking about the commute, weather, or how much is 210 C in Farhenheit so you can set up your imperial-using oven to the right temperature for perfect jacket potatoes :) (and I mean saying, as opposed to yelling Hey Siri in the hopes that it will hear you across the room)
Photos question is hugely subjective and divisive. I don't have a leg to stand on to offer any practical advice that I wouldn't be able to immediately and vigorously refute from the other side. Perhaps consider reframing the question and make it when you need to get an entry-level camera in addition to an iPhone.
For hardcopy backup google-fu spit this at me - https://www.nytimes.com/2016/01/12/technology/personaltech/printing-a-paper-backup-of-your-icloud-contacts.html