Breaking Bad was the best show ever, and Better Call Saul did everything better, start to finish.
Some fans will hate this finale (see the other reviews), but it pretty much played out exactly as fans predicted on the Reddit threads which, here, is a good thing. They didn't pull out anysubversion. Instead, it payed off every thread that's been set up since season 1 that hasn't yet been tied.
The episode had a great framing device about regrets which has been a prevailing since the first episode where Gene looks back at his old commercials. The show plays out like a tragedy about the slow demise of Jimmy McGill facilitated by a slew of avoidable mistakes. The series finale does a stellar job reflecting on that and ties it all together wonderfully.