Attack on Titan creator has no intention for sequel anime or manga

Hajime Isayama, the creator of anime series Attack on Titan, has commented that once the finale has been released, he won't be doing a follow-up

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Read Attack On Titan : Fan-Made Sequel - V25 - WebNovel

Will there be a sequel to Attack on Titan?

Attack on Titan's series finale isn't supposed to feel good - Polygon

Attack on Titan: Season Two [Blu-ray] : Bryce Papenbrook, Josh Grelle, Trina Nishimura, Ashly Burch, Bryn Apprill, Clifford Chapin, David Matranga, David Wald, Elizabeth Maxwell, J. Michael Tatum, Jason Liebrecht, Jessica

Attack on Titan - Wikipedia

Will there be more Attack on Titan? — Will there be a sequel?

Since the AOT manga is finished, will Hajime Isayama make a new manga? - Quora

Attack on Titan (film) - Wikipedia