If you care about privacy, these are the Google Keep alternatives to switch to
(www.androidauthority.com)
I honestly don't even care if they look like post-it's.
What I mean is that each note is just a small, quick, disposable, spot to write a single thing for later. Anything that complicates or adds mental friction is a hinderance.
And the notes also need to be shareable and syncable with other people.
I used notesnook for while. I'm using standard notes now. But I still use Keep for its very specific strengths. Mainly as a shared shopping list. I've not found anything that's as good at that specific perpous.