A youth product of a local club in Villiers-le-Bel for 4 years, Bettaieb moved to the famed French academy
INF Clairefontaine at the age of 13, and followed that up with stints at the youth sides of
Red Star and
Angers. He began his senior career with their reserves in 2014. He transferred to the
Belgian National Division 1 club
La Louviere on 2 July 2018. He moved to the Luxembourgish club
Dudelange in the summer of 2019. He helped Dudelange win the
2021–22 Luxembourg National Division. On 30 June 2022, he signed a professional 1+1 year contract with the newly promoted side
Ümraniyespor in the Turkish
Süper Lig. He made his professional debut with Ümraniyespor in a 3–3 Süper Lig tie with
Fenerbahçe on 8 August 2022. ==International career==