There’s no calendar for my country, but I added the calendar from officeholidays.com a while ago. I’ll have to keep using it.

And they will continue to do it for a while, for the ESR version

If you have the knowledge or want to learn about it, and you are willing to deal with these tasks (configuring the system and keep it updated), the DIY approach makes sense.

I was on that situation some months ago, and I didn’t want to spend time in system maintenance, so I bought a NAS device.

Safari, but I’m trying out Vivaldi. Looks good, scrolling is not as smooth as expected for a browser, but it’s just a beta.