Most of the onion links that I copy paste in DuckDuckGo on tor browser show 'invalid onionsite address'. Even the very common ones like the url for torch. I tried connecting with a bridge, it didn't help. Now I don't have much idea at all about how it works, but I read an answer on quora related to my issue and it said to add this line in the torrc file- 'FascistFirewall 1', so I did.. still nothing.
I opened the DuckDuckGo onion search engine. Then I tried to paste the url for torch in there. Many clearnet search results came.. and above the results a pop up said 'You are trying to reach an onion/hidden service. To access cnkj6nippubgycuj.onion via web you will have to use Tor Browser.' But I am already searching all this from Tor browser itself.. I have connected to tor browser. So why does it say that, why doesn't the link open? This one onion chatroom that I have been accessing for a few days, it always opens no problem. It is an onion link too, so why don't other onion links open?