Coulibaly akamiririra Mali mumakwikwi akawanda epasi rose. Akaita avhareji yemapoinzi gumi nematatu uye gumi nerimwe rebounds pamutambo kuti atungamire Mali kuenda kuFIBA U-18 African Championship muna 2018. Muna Chikunguru 2019, akakwikwidza kuchikwata cheMali icho chakahwina menduru yesirivheri kuFIBA U19 World Cup
. Coulibaly averaged 13.1 points, 6.9 rebounds, 2.4 assists uye 2.1 steals pamutambo. Mumutambo wemenduru yegoridhe neUnited States, akawana mapoinzi gumi nemanomwe uye akavharwa katatu.