Two Trump presidential campaigns later, and a probable third on the way, “MAGA” remains undefined. By design.

"lives longer"
Well... the average life expectency dropped 3 years from 2019 to 2021, thanks in large part to an incompetent orange-haired buffoon who criminally mishandled global pandemic response.

"MAGA" (through your explanation of paragraph 1 & 2) is an excellent example of The Barnum Effect.

"MAGA" means accepting trump as infallible, and as being equal to Jesus.

There’s not a snowball’s chance in Hell that he is the equal of Christ.

Not in reality, of course, but some view him as superior to Christ.

https://m.youtube.com/watch?v=t28TXvRPpW8

Those people are lost and they deluded themselves to think they’re not. It’s sad, man. 😞

Well, they got a lot of help getting deluded from American right-wing media, evangelical churches, and Russian web brigades. Also they vote, threaten poll workers and election officials, and have lots of guns, so I'd say it's more than just sad.

They do it on this site.