It’s odd, for the first example the exact article you were looking for is the first result for me whether or not I am searching signed in or from a private session.
The second example, “Ten Elements of the False COVID Narrative”, assuming you’re looking for it at scienceblog, is the fourth result. Above the fold, at least. (Edit: Sort of nevermind, I missed that you didn’t use quotes for that one. Without quotes the scienceblog page appears in slot 11).
I am in the US and get my results in English, if that matters. I checked to see if toggling safe search changed anything, but nope.