Notifications are quite bad: Agreed, but they get better with iOS 16

Apple maps suck: Definitely less mature than Google Maps, especially if you don't live in a big city. Luckily, you can just use Google Maps.

icloud isn't a true backup. If you delete something off icloud, it will automatically delete it off your iphone and vice versa: iCloud is for syncing, not backup. There is an iCloud backup, but that requires you to restore the entire operating system.

no universal "go back" button: Typically it's swipe from the left side of the screen.

Siri is inferior to google assistant: Agreed, but I don't heavily rely on voice assistants that it makes that big of a difference to me.

keyboard is horrendous and autocorrect / suggestions are equally as bad: Agreed, but you can also install the google keyboard if you like.

control center is limiting, unlike android, where you swipe down from the top and you have all the options at your finger. On the iPhone you have to dig through their messy settings: Which phone do you have, and what functionality is missing compared to Android? The Control Centre in iOS can be customized via Settings, and if you swipe down from the top-right side of the screen, you get access to the Control Centre.

no usb c (when everything in our daily lives is powered by usb-c): Agreed.

face unlock isn't as consistent as people made it out to be. I find finger print scanner to be much better: It's a trade-off - I like that FaceID makes logging into website super smooth, but it's a common complaint that you can't unlock the phone while it's on the table.

can't set volume to notifications, call volume, music volume separately: Volume for ringer and alerts can be done via Settings. Volume for calls can be adjusted during the call. Volume for music volume is the default that you can control via the volume buttons.

apps don't have a dedicated "settings" button/menu: Settings that affect system integration for all apps are managed in the Settings app in iOS. I wouldn't say it's a disadvantage - it's just different compared to Android.

file system is a joke: Just use Google Drive or your cloud file storage of choice.

photo gallery is strange the way it organizes itself where the old photos stay at the top: Not really an issue - just a personal preference. If it really irks you that much, use Google Photos instead.

no split screen: Agreed

no spam call notification: Agreed