New mac? You have a new MacOS, and No more iTunes.
Apple basically threw away iTunes for synching phones etc. with one release of MacOS.
This should happen:
Plugging the phone cable into the new laptop will make it show up on the desktop. You will need the old USB3 to lightning cable or perhaps a USB-C to lightning cable. Easy to find.
I think that Apple will suggest this.
https://support.apple.com/en-my/guide/iphone/iph875319a3a/ios
If you don’t want to use iCloud or other services, you can connect iPhone to your Mac or Windows PC to sync the following items:
Albums, songs, playlists, movies, TV shows, podcasts, books, and audiobooks
Photos and videos
Set up syncing between your Mac and iPhone
Connect iPhone and your computer with a cable.
In the Finder sidebar on your Mac, select your iPhone.
Note: To use the Finder to sync content, macOS 10.15 or later is required. With earlier versions of macOS, use iTunes to sync with your Mac.
This should be your case.
Alternately, they will suggest getting the premium iCloud plan and synching to it.
I suspect that both will work.
The missing piece is the backup for the computer. I buy a really cheap large disk drive for each computer, and use "Super Duper" the free version, to make an exact copy of the disk now and then. You could also use one for
time machine. A Passport for Mac works right out of the box. That way, your music would be on a backup disk, and you can restore it to anything.
Good luck and keep the group posted on progress.
There are third party apps you can put on the computer that will scavenge music, pictures and documents on the phone, but I never used one, because I don't trust them.
If I mis-interpreted any of this, let me know, and I will correct it.
I almost got a new MBA or mini recently. But didn't.
Edit: the new laptop does qualify you for AppleCare.
Go for it!!
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