There was the claim that we might be alone
If you're translating the text then, yes it may be a translation issue, my replies are small, you can easily check that I never said we're probably alone or not. I actually didn't make any bold claim, all I said was we don't know anything about the existence of intelligent alien life yet, and all we know so far is that we are our own danger.
On the other hand you are the one making bold claims without proof, you literally said that there is intelligent alien life out there without proving it, so far all I've been answering you is: you're wrong: ECREE, thus we don't know about that. ECREE is the famous quote "extraordinary claims require extraordinary evidence". Probability alone doesn't prove anything, that's the Fermi problem in general, and you're falling for it.
You also literally said in one post above "1% per galaxy" which is very different than 1 every 100 galaxies, but I forgive you on that because you may have chosen the wrong words on that post.