In playing for
RK Celje in the
2016–17 EHF Champions League, Makuc became the first player born in the twenty-first century to feature in the competition. That same year, he became the first born in the twenty-first century to score in it. After signing with Barça, he was awarded the player of the match award on his debut in a victory over
BM Benidorm in the
Supercopa ASOBAL. He made his international debut for Slovenia against the
Netherlands in 2021. Makuc was the top scorer in a key
2022–23 EHF Champions League group match against
THW Kiel. Considered one of the best young players in the world, he has been compared to his idol,
Ivano Balic. Makuc was expected to play a significant role for Barça ahead of the 2023–24 season following the departure of
Luka Cindrić, but suffered a serious knee injury in pre-season Makuc missed the
2024 European Men's Handball Championship as a result. ==Honours==