If I were you, I’d be looking for another ebook reader. Even more so because Amazon is owned by Bezos, who supports the Trump regime.

That depends on what OS your tablet is running. Calibre is cross-platform, so chances are it can run on your tablet.

I would say no. With the recent debacle the writing is on the wall. Mozilla is not taking our privacy seriously. So, I have switched away from vanilla Firefox.

I would recommend using a fork instead: LibreWolf, or Floorp, or Zen; and Ironfox on Android. Mullvad Browser is another option.

Eve Online is a space MMO and market simulator made in Iceland, tho the company has been acquired by a South-Korean holding company.

They all still rely on YouTube for content. Of course the problem is that the real alternatives (such as PeerTube) have only a fraction of the content.

They also have a flat 5 euro per month rate, which hasn’t changed in 15 years.