Starfish

Debian Stable as base OS, then activate unstable repos in a sandbox/container. Maybe even Distrobox for newer Apps.

You can use posteo for 1€ a month. For more aliases look at mozmail (mozilla) or simplelogin. Or try runbox if you dont care about encryption at rest

youtube-local or yt-local with vpn. its very easy to set up

How to get this font on linux?

Beagleboards are great. Good Support and nice community. Nearly as good as Pi. I used BBB because it was the only open hardware SBC available in my area.

BTW: Please recommend me other good Open Hardware/Open Firmware SBCs. I am always looking for something new. Maybe for a Router or Selfmade-NAS.

Maybe try out MX Linux. It has a bunch of GUI Tools preinstalled. With MX Installer you can install Brave and even Flatpaks.
See here: https://www.youtube.com/watch?v=aESEb8lTvz4&t=1014s

grsync, its easy to use

go to Yast -> Software Repositories and add the Brave Repo. Now you can install it in Yast Package Manager.
https://brave.com/linux/

You can also install it with “opi” from terminal: “sudo opi brave”

OpenSuse Leap. In YaST (its system settings tool) you can do everything from a GUI. No cli, no config files, no tinkering.

https://i.imgur.com/AdP6fvK.png
On my KDE Desktop (OpenSuse) the Clipboard icon looks like this. The WhatsApp Icon opens a Browser with Whatsapp?

i would go for the most used routers because they have the best support. look at the download statistics to get an idea of which ones are the most popular routers atm.
I just bought a used Archer C7 v2 because its popular and i could get it cheap in my area.

and check out this link: https://openwrt.org/toh/recommended_routers

Mx Linux or Antix Linux. If you need more GUI and handholding try OpenSuse Leap

Any distro is good for privacy. Try out OpenSuse Leap or MX Linux with KDE to get a windows-like experience

Its beautiful. How did you get that scissor icon (guess its a screenshot tool?) and whatsapp in your systray?