"Ant-Man and The Wasp: Quantumania" faced several challenges contributing to its underperformance. Critics noted a weak script and inconsistent tone, which failed to resonate with audiences. The film's reliance on CGI and a complex plot involving the multiverse may have alienated viewers familiar with the franchise's lighter tone. Additionally, competition from other blockbuster releases and franchise fatigue played a role. Despite its strong cast, including Paul Rudd and Michelle Pfeiffer, the film struggled to meet expectations, leading to its disappointing box office results.

Yes, "Ant-Man and The Wasp" has a sequel titled "Ant-Man and The Wasp: Quantumania," which was released in February 2023. This film continues the adventures of Scott Lang (Ant-Man) and Hope van Dyne (The Wasp) as they explore the Quantum Realm and face new threats, including Kang the Conqueror. It builds on the events of the first film and expands the story within the Marvel Cinematic Universe.

In "Ant-Man and The Wasp," the film culminates with Scott Lang (Ant-Man) and Hope van Dyne (Wasp) successfully rescuing Janet van Dyne, the original Wasp, from the Quantum Realm. They face off against the villain Ghost, who seeks to stabilize her condition. In the end, with Janet’s help, they defeat Ghost and return safely. The film concludes with Scott and Hope embracing their roles as partners, but it also sets the stage for future challenges, particularly with the looming threat of Thanos, as Scott is left in a precarious situation due to the events of "Avengers: Infinity War."

"Ant-Man and The Wasp," released in 2018, is generally well-received by both audiences and critics. It combines humor, action, and heart, continuing the story of Scott Lang (Ant-Man) and Hope van Dyne (the Wasp) as they embark on a mission to rescue Janet van Dyne from the Quantum Realm. The film is praised for its visual effects, lighthearted tone, and strong performances, particularly from Paul Rudd and Evangeline Lilly. While it may not be as impactful as some other Marvel films, it offers an entertaining and enjoyable experience within the MCU.