A youth product of
Red Star, Alvero moved to the
Sochaux youth academy on 25 May 2017. He began his senior career with the Sochaux reserves in 2020. He debuted with the senior Sochaux squad as a late substitute in a 3–0
Coupe de France win over Bresse Jura Foot on 13 November 2021. He signed his first professional contract for three seasons on 18 February 2022. He scored his first goal in Ligue 1 on 5 November 2023 against
FC Metz. On 31 January 2024, Alvero joined
Bundesliga side
Werder Bremen on a loan deal until the end of the season, with an option to buy included. Lyon disclosed the loan fee as €250,000 plus a potential €100,000 in bonuses and the purchase fee as up to €6.25 million. Werder exercised its option and signed Alvero to a permanent deal on 10 June 2024. On 2 February 2026, Alvero moved on loan to
Amiens in
Ligue 2. ==Personal life==