You can download music from Google Play Music for offline listening on many different devices, including the iPhone. Here's how to do it.
If you want to switch from Spotify to Tidal, you can transfer your playlists using a service like Tune My Music.
Cloning a hard drive on a Mac is a different process. If you have a newer MacBook or iMac, you can't swap out the hard disk on it. The Apple Silicon-based Macs have the storage soldered in, so there's ...