MDM profiles are just XML files. They can be created with any text editor and distributed to the phone by email or web server. Apple provides the free "Apple Configurator" app in the MacOS app store. There are also websites and/or OSS tools to generate profiles, e.g. https://github.com/ProfileCreator/ProfileCreator.

Apple supplies a free application for managing MDM.

https://support.apple.com/guide/apple-configurator-mac/welco...

^^^ Highly recommend this. If you are technical enough, a family managed Apple Configuration is more than enough to protect for most situations and from most threat actors.

If you're threat actor has the resource to break that, get a CC or a good lawyer on retainer I guess.

This saved me one time when I was gifted an Apple TV without a remote.

No way to add a WiFi profile, thus no way to use an iPhone as a remote. No ethernet available either.

Configured a WiFi profile, uploaded to the Apple TV and could finalize the setup.

It’s quite a powerful too for initial setup.