Self-Hosted Main

I wish to de-google but this one is probably the one I know least how to replace.

I need one-click access to my notes, with an easy search that works just as well from my firefox browser as from my android home page.

I must always be able to just close the page/device and never worry that the stuff I put in was saved.

Should be able to insert inline images and markdown ? Is there a "markdown with images" yet ? Like "sixels" I think they're called ?

I would like to be able to open my notes as a notepad++ session, but I understand that's starting to be a lot to ask.

I would like my notes to be a syncthing shared folder? I really like the ideas that the notes are actual names files somewhere, that I can just edit with a regular text editor.