Suicide Squad director David Ayer gets blunt about the changes DC made to his original vision for the film. Before James Gunn's The Suicide Squad debuted to great reviews in 2021, there was Ayer's movie, 2016's Suicide Squad, which marked the debut of the team in the DCEU. Despite the film's successful box office run, Suicide Squad failed to be as beloved as fans expected, and Ayer has claimed for years that is due to changes DC made to his film.
https://screenrant.com/david-ayer-suicide-squad-bad-dc-experience-explained/