Firejail is great. I can recommend it.

I second this. XnView MP is one of the best free programs out there.

I am using Lutris for Windows games (sometimes Windows applications, too) almost exclusively on my rig. It works perfectly fine.

Yeah. Will do the update on my server playground today :)

The issue is resolved.

True :D but my link goes directly to the snapper section of the wiki^^.

SUSE & openSUSE also have a great documentation about the snapper snapshot tool which is also available in many distributions:

Snapper Documentation

• SUSE Linux Enterprise
• openSUSE Leap
• Arch Wiki

Arkenfox is not unmaintained but rolls a bit slower than Betterfox. But I will try Betterfox as well.

I also would vote for uBlock Origins. This is by far the best solution on the market. It blocks more than just ads and trackers. uBlock blocks also malware sites, popups, miners and other annoyances. Or you can also use it as an URL shortener tool to get rid of the tracking parameters in the URLs.

Something I’ve also been looking at more closely for a few days now is Arkenfox to hardening my Firefox more effective. Does anyone here has some experiences with Arkenfox?

I have used PhotoRec in the past (~10 years or so) when I needed to restore pictures from a SD-Card (FAT). It worked pretty well. If there are more modern solutions I would also like to get to know them.