This sound effect can be found on Animal Trax, which was made by The Hollywood Edge.
Links:
https://www.audiomicro.com/animals-wild-elephants-elephant-trumpet-gro-at044301-sound-effects-113558
https://soundideas.sourceaudio.com/#!details?id=11508811
Godzilla and his Titan allies battle three threats, the ancient SpaceGodzilla, the renewed threat of Apex and other rouge humans and Biollante and Dagahra, two Titans who are boundaries between nature and pollution. Godzilla tackles his darker instincts.
