Question

I'd like to have a complete copy of my content in my computer and to use without internet connection. Content would be syncroniced once connected again

Answer 1

Sorry to say that this type of questions will never have an answer until it happens, if it happens.

There is no public Notion Roadmap and because of that, no one knows "when" something will be implemented.

But Notion Offline support is supposed to come. Time will tell.