Fake news!
Agrippina's death is also fake news. In fact there's multiple tales, all appearing long after Nero's death, and all contradictory, so she's about as real as the 3 fucking wisemen lol. As for Seneca, it was highly romanticized and all proof of his probable innocence only surfaced long after Nero's death. And honestly expecting people accused of attempting to murder the emperor to survive, even if he had given the evidence that was found after the fact, is very foolish. That's just inviting more plots to murder you.
As for the deficit, most of that was directly caused by the senate. Senate which btw was the same organism that attempted to murder him repeatedly and funded said rebellions. And people wonder why he became paranoid and started persecuting his own officers...
Yeah but that's because the swamp tried to murder him repeatedly, can't exactly make an omelet without cracking a fuckton of eggs once it gets to that point. As for the festivities... Name a single emperor that didn't throw festivities as soon as shit started going down south to try and keep the rebellions to a minimum.
Ok one that ISN'T AURELIAN. There wasn't exactly many other ways to calm the people, and with the fucking senate constantly trying to pull another caesar and constant fucking uprisings by christcucks and gauls funded by said senate it's not like he had much of an option there.
Nero's rule was catastrophic to rome, yes, but this can't really be blamed on Nero himself. He got in at a point at which the patricians' corruption had reached pick stupidity and the christian and jewish bloodlust peak barbarism. If anything at least he kept rome from completely collapsing, I'd say not much else could be asked of him taking into account all he had against him.