@NiLuJe, thanks for pointing out embryo's tool! That might work, but I must admit, I am very much out of my depth here with respect to installing KOHighlights. It also seems to only have linux and windows compatibility and I use a Mac. If I am wrong about this, however, I would love to be corrected.
I think that for me the best option is to give into the Evernote or Joplin functionality. I'm a little biased towards Joplin––it's free––but looking at the github threads on the plugin, it seems like it is also out of my depth. I'm also not sure if it's written to be compatible with the Mac Joplin versions.
So that leaves Evernote where I get the below crash page whenever I tap the password field in the login in process.
Help?
https://1drv.ms/u/s!AurnVm193zRqmmxk...GCeF4?e=OqOP37