Since I use flatpak, Obsidian plugins for Zotero don’t work for me.
You could install a Zotero plugin called “better notes”, which is able to generate markdown notes (with and without highlights) and with links to your highlights in zotero
In zotero, click on the yellow note, then the plus button under the search field to generate your notes.
Then click on your note, in there click on the 3 dots to export your note.
Simple and useful. Just “wegwerf” other plugins that don’t work. 