I also got frustrated with Granola earlier this year and have been building my replacement - Noted: https://takenoted.com/

It shares similar principles but is (currently) closed source and mac-only.

Take a look at anarlog as well - it's a great project and I wish I'd found it earlier as I probably would have contributed instead of starting my own: https://anarlog.so/

Let me know if you want to compare notes - I am sure we have hit a lot of the same issues.