Apparently the previous adaptation skipped and changed things.

Well, that is what I said if you read it again (“control some parts of your PC from your phone”). I did forget about controlling your phone from your computer though, which can also be done.

KDE Connect is an android app that allows you to control some parts of your PC from your phone if you have a corresponding app installed on your computer, not a file manager.

You’re missing out. The trackpad function is amazing, not having to get up from bed when your desk is too far is a god send. I know I could buy a wireless mouse, but why if you can just use your phone?