It appears that Joaquin Buckley was once scheduled to face off against Alex Pereira. However, the fight ultimately did not take place.
According to reports, the cancellation was due to an issue on Pereira’s side, known by his nickname “Poatan.” Details surrounding the situation remain limited, but it was the primary reason the matchup never came to fruition.
https://www.sportskeeda.com/mma/news-i-planning-knocking-man-out-joaquin-buckley-calls-alex-pereira-passing-short-notice-fight-2022