Even more strange is that when I type "PeerTube", some suggestions appear, but searching any of them will end up back on the "no results found" page.
The suggestions:
Searching one of them:
It has been a few weeks since I first encountered this issue. I've tried again and again, but it never worked.
What is your safe search setting set to on duck duck go?
If it is set to strict it will result in no results but if you set it to moderate it will return results.
It was on moderate. Turning it off didn't make any changes.
It is weird that your snapshots don't have the safe search options shown like mine and everyone elses. Do you have any content filters or anything like that on your devices or internet? They could be forcing it to be strict even if you choose otherwise.