[1] He competed in the 130 kg event where he lost his first match against Sabah Shariati of Azerbaijan.

In June 2019, he lost his bronze medal match in the 130 kg event at the European Games held in Minsk, Belarus but he was awarded this medal in November of that year after the disqualification of gold medalist Kiryl Hryshchanka of Belarus.

[2] In 2020, Kuchmii won one of the bronze medals in the 130 kg event at the European Wrestling Championships held in Rome, Italy.

[3][4] In that same year, he won one of the bronze medals in the 130 kg event at the 2020 Individual Wrestling World Cup held in Belgrade, Serbia.

[6] In March 2021, he competed at the European Qualification Tournament in Budapest, Hungary hoping to qualify for the 2020 Summer Olympics in Tokyo, Japan.