You can consider my project https://github.com/Ogefest/Notepack
Encryption is realized using packing note into zip archive with password. Notepack have some other nice features but you can read more on github pages.
Any feedback welcome :)
You can try my project https://github.com/Ogefest/Notepack
If you have some questions or feaure request let me know.
This is desktop application, javafx packed as simple executable for windows and linux so no docker needed. You can download portable version for windows without installation needed or linux appimage. All releases files are available https://github.com/Ogefest/Notepack/releases
You can try mine project https://github.com/Ogefest/Notepack It's not full alternative for Notion but more like multiple notepads in one application focus on privacy without vendor lock-in.
Still on early stage of development but it's quite usable, I'm using it every day.