RohithRavi
I had already understood you well except for what ‘page’ is supposed to be as an element. My answer remains unaffected. Linking within a note to other parts of this note is not possible as far as I know.
Possible option: Use headings (Ctrl+H or Ctrl+J) within this single note. This would at least allow you to collapse it fastly with a shortcut (Opt+Cmd+Shift+Left) to get quick access to individual parts.