https://www.animenewsnetwork.com/interest/2021-03-25/nhk-documentary-captures-hideaki-anno-creative-struggles-on-final-evangelion-film/.171027
Anno also spoke frankly about a time when he contemplated suicide after the creation of Neon Genesis Evangelion
nhk documentaryhideaki annocapturescreativestruggles
https://www.animenewsnetwork.com/news/2020-04-06/nhk-world-streams-hayao-miyazaki-4-part-documentary-for-free/.158328
Documentary aired in 2019, covers 10 years of Miyazaki's work beginning with Ponyo
nhk worldhayao miyazakistreamspartdocumentary