X-files you are missing a bit on context.

It debuted the 1st year that Fox had programing everyday of the week.

While overall X-Files was lowly rated, it was about average for Fox viewership (it would be like comparing Ted Lasso's viewership numbers to Young Sheldon)

It aired on Fridays, when viewership was lower overall

When looking at broadcast TV there are other things to consider other than just overall ratings. DOW, that I mentioned above, is big. Also how much of it's lead in show's audience does it retain. Is the show gaining viewers each week, maintaining or losing.

Star Trek: TGN was released in syndication. It was the 3rd highest rated syndicated show in its 1st season. Highly unlikely it would have been canceled anywhere

Seinfeld is interesting. 1st season was only 5 episodes, so hard to get a following on network TV with that low a number. 2nd season started bad but was given a 2nd shot and moved to after Cheers, where it preformed really well and the rest is history. There is a good chance that it could be a causality in today's environment.

Breaking Bad is another potential case. It was one of AMC's most watched shows when it debuted, just the network didn't have many people watching at the time. It was also just their 2nd original drama series that was released. I may be a casualty it today's environment if it was released on one of the big platforms, but likely would survive on one of the smaller ones.