Cricket Career

He is a left-handed wicket-keeper and batsman. Kotze was part of Namibia's squad for the 2018 ICC World Cricket League Division Two tournament and for the 2019 ICC World Cricket League Division Two tournament. Namibia finished in the top four places at the tournament, earning One Day International (ODI) status Kotze made his ODI debut on April 27, 2019 against Oman in the final of the tournament.

In June 2019, he was one of 25 cricketers named to Cricket Namibia's elite men's squad ahead of the 2019–20 international season. He made his Twenty20 International (T20I) debut for Namibia against Botswana on 20 August 2019 during Botswana's tour of Namibia. On his debut, he finished with 101 not out in 43 balls. He became the first Namibia batsman to score a century in a T20I match.

In August, Kotze was named to Namibia's ODI squad for the 2019 United States Tri-Nation Series. On 20 September 2019, he scored 136 runs in the match against the United States, becoming the first Namibia batsman to score a century in ODI cricket.

Later that month, he was named in Namibia's squad for the 2019 ICC T20 World Cup Qualifier tournament in the United Arab Emirates. Before the tournament, the International Cricket Council (ICC) named him a key player in Namibia's squad.

In 2021, Kotze retired from cricket at the end of Namibia's home season to spend more time with his family. However, in April 2022, he announced his retirement. A few days later, he was named in Namibia's T20I squad for the series against Uganda