After that, he attempted to launch a new franchise for himself with Dolittle, but the movie ended up bombing, and pushed RDJ further away from acting.

Source: https://indianexpress.com/article/entertainment/hollywood/robert-downey-jr-concerned-effect-marvel-movies-iron-man-having-on-his-acting-skills-8827197/

Feige also talks about RDJ being a mentor to his MCU co-stars.

Source: https://www.aceshowbiz.com/news/view/00216028.html

Nevertheless, Strauss enters the film with reasonable levels of RDJ charm.

Source: https://collider.com/oppenheimer-robert-downey-jr/

RDJ recomposed himself and explained, “I’m one of those guys who is assuming the social decorum is in play and that we’re promoting a superhero movie, a lot of kids are going to see it.

Source: https://www.koimoi.com/hollywood-news/robert-downey-jr-once-lost-his-cool-walked-out-of-an-interview-later-shared-that-it-made-him-feel-like-hes-obligated-to-accommodate-weirdo-sht/