Welcome @augusto-md!
(1) is something that is solved in the desktop app with a plugin, if I understood you correctly. At least on my desktop client (v3.3.2 / macOS / Markdown editor) navigating away from a note and coming back to it brings my cursor to a different line in the text. The same plugin, if adapted to the mobile app, could solve the issue there. It can also potentially sync the location between the mobile app and the desktop app. I have plans to release the plugin on mobile, but haven't gotten around to it.