[1][2] As a youth, he joined the club Saint-Charles Charenton [fr] in 2011, where he remained through 2020 and was teammates with players such as Tidjane Salaün.

[5] Dadiet made his LNB Pro A debut for Paris Basketball's first team in October 2021, at the age of 16, totaling seven points in eight minutes of playing time.

[8][9] During the 2022–23 season, he played for Ulm's developmental team, OrangeAcademy, in the German third tier, averaging 16 points and 4.2 rebounds per game.

[2] He later participated at the 2022 FIBA Under-17 Basketball World Cup and helped France win the bronze medal while averaging 4.3 points, 2.2 assists and 1.4 rebounds per game.

[5] Dadiet's older brother, Maxence, is also a basketball player, who represents the Ivory Coast national team at international level.