Amorth was appointed chief exorcist of the Diocese of Rome in 1986 and remained there until 2016, when he died at age 91. In those three decades, Amorth claimed to have conducted over 60,000 exorcisms.

Source: https://www.kelownadailycourier.ca/entertainment/national_entertainment/article_72c1070e-1565-5f23-8b7b-57810e64f996.html

Russell portrays Father Gabrielle Amorth in the supernatural thriller, a real-life figure who was based at the Vatican and is said to have performed 60,000 exorcisms.

Source: https://www.dailymail.co.uk/tvshowbiz/article-11951303/Russell-Crowe-reveals-bizarre-incident-happened-filming-Popes-Exorcist.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

The Exorcist: Believer brings back Ellen Burstyn as Chris MacNeil, who spent the last 10 years studying exorcisms after her daughter's possession.

Source: https://screenrant.com/exorcist-believer-chris-regan-what-happened-after/

The public’s view into the enigmatic religious rite of exorcisms has been oversimplified and sensationalized since the 1970s, but thanks to the new addition to the franchise, some gaps in its portrayal have been accounted for.

Source: https://www.guilfordian.com/features/2023/10/28/the-exorcist-believer-compels-viewers-to-see-religion-in-film-in-a-new-way/