Initially, Smits first practiced football at the age of 6, but his cousin asked him to participate in handball training during the winter break.
Some time later, he also played in the first team of Limburg Lions led by Aleksandr Rymanov.
In 2016 Smits moved to Danish side Randers HK and two years later he went to Germany to play for TV Emsdetten.
[4] In January 2021, Smits returned to Denmark to play for TTH Holstebro with his brother.
[5] His parents, Gino Smits [nl] and Cecile Leenen, played handball at high level.