schmurian

Mine already died. Now i have to wait...

Maybe ask Paul Watzlawick. Or since he died in 2007, you can read one of his very entertaining books.

Please do. Maybe you‘ll find something useful. I found radicale working best for me (it was easy to install and selfhost). Selfhosting covers many topics, so it‘s difficult to share additional links here. But if you do a websearch, you should find good tutorials. Try to host in the local network first, and install a VPN to access services like CalDAV or CardDAV on the road. This will keep you from spending time on additional security considerations when hosting something on a public accessible host, which can be overwhelming when still being at the beginning.

Do you mean something like CalDAV? There are some solutions listed on the awesome-selfhosted github list

1

Ah, sorry. You‘re right.

An example for a raspberry audio setup could be balena sound

Files not being fully synced and ended up corrupt. This happened especially on iOS with documents actively worked on like for example numbers sheets.

I have encountered errors. But I still would recommend it. It‘s a good app. However, I moved back to Veracrypt.