Cottoy was born in Saint Vincent and the Grenadines to parents Valerie and Elroy and has a younger sister, Brianna.

[1] After discussions with friends and family, he reunited with his former coach, Matt Blokker, to play for the Langley Rams in 2018.

[6][5] Following a strong training camp, he made the team's active roster and played in his first game on June 15, 2019 against the Winnipeg Blue Bombers where he recorded one reception for six yards.

After the CFL canceled the 2020 season due to the COVID-19 pandemic, Cottoy chose to opt-out of his contract with the Lions on August 31, 2020.

[9] He had attended a workout with the San Francisco 49ers and New York Jets, but eventually re-signed with the Lions on June 21, 2021.