After update to Monterey no more iTunes and cannot add Movies to Music App

Still need to know how to get all my movies, home movies, downloaded videos, etc onto my iMac. Well, they're already on my iMac but not anywhere I can access them. I am not going to start using the cloud, or my iphone, for any of this. I have several appletv boxes and unless I can connect to iTunes (or Music App) thru home sharing, I don't see how I'm ever going to be able to access my videos and movies again.

Not sure how connecting iPhone to Music App allows me to move or import Movies/Videos from iPhone... iTunes was pretty simple and straight forward.

Does anyone know if I can use time machine to go back/revert my iMac to 10.14 and get iTunes back. This is becoming much too complicated. Now I see syncing choices that want to replace media libraries... I want all my photos and all my movies and videos on my computer's external hard drive where they belong. I need access to all my stuff from all my AppleTV boxes over my home network... I usually just go to the "Computers" icon and all my libraries are available. Why was this changed? So my question is, Can I use time machine to go back??

I have just spent the last 2 days trying to fix my iTunes library so all the movies and other media will be compatible and/or available in Music App. I have re-imported movies and they are not showing up in either App. I am absolutely lost with this. Makes no sense at all. Why would they have changed this so massively?

I think I need to either revert back to 10.14 if possible or take all my Music and Movies and Videos and move it to a safe place (separate hard drive) un-install Music App and delete whatever media folders it thinks it's using, and completely start over. Re import all my music, videos and movies. I do not think will be able to get Music App and ATV app to work the way I need them to.

No I have not tried the TV app... never saw it. I will check for it. Why does Music App have icons for "TV Shows and Movies" if it can't import them?