I'm trying to backup my old and (very) broken iPhone so I can restore it on a new phone. The home button is broken, and the top half of the screen is broken (so I cannot enter my password). I also cannot access the menu you get when you swipe up, and Touch ID doesn't work. I have tried plugging it in to do a backup from iTunes, but I get the message "Unlock iPhone to use accessories" when plugging it in. I do not have "Hey Siri" enabled and I can't use the home button to activate Siri (I read about a trick to sign in using Siri). My phone is connected to WiFi and to Find My iPhone. I have access to a Mac and PC.
It is an iPhone SE model A1723.
Is there any way I can back it up still (iTunes, iCloud, or some other method) to restore it onto a new phone? If there's any more relevant info I forgot to add, let me know. Thanks in advance!