Chris Hemsworth's analysis of Ant-Man & the Wasp: Quantumania perfectly encapsulates why the movie was not a runaway success. In Ant-Man & the Wasp: Quantumania, Scott Lang (Paul Rudd), Hope van Dyne (Evangeline Lilly) and the Ant-Man team find themselves unexpectedly warped into the invisibly tiny world known as the Quantum Realm. As they attempt to regroup and get back home, they run into the villainous ruler of the Quantum Realm, Kang the Conqueror (Jonathan Majors), and must unite to stop his plot to wipe out different timelines throughout the multiverse.
https://screenrant.com/chris-hemsworth-antman-3-failure-comments/