> I also miss some things, that I did not store in earlier times and that are now nowhere to be found

Same. So much content disappears over time and even if it still exists it can be difficult to find again without knowing the exact search terms used. Or search engines just don't list it in a visible spot because 200 links to Pinterest and other networks are ranked higher.

I now have a habit of downloading or at least screenshotting anything I find interesting. Which of course leads to the problem of organizing & finding the data locally.