https://www.theregister.com/2024/06/05/agile_failure_rates

you do need a plan before you start a project

https://www.theregister.com/2015/01/08/erik_meijer_agile_is_a_cancer_we_have_to_eliminate_from_the_industry

its not the agile manifesto that is the problem. Often its the business and the quality of the staff that is the issue.