[3] Sousa started training Brazilian Jiu-Jitsu at the age of ten under Leandro Martins who was part of the team founded by Fernando "Terere" Augusto.

Sousa was awarded his black belt by his master Ricardo Vieira in October 2013 and won the IBJJF World No-Gi Championship.

[13] Sousa lost by referee decision against André Luis Leite Galvão at the IBJJF World Championship and took home silver.

[31][33] In September 2017, Sousa was a last-minute addition to the invitation-only ADCC world championships, replacing Checkmat teammate Luiz Panza at the -99 kg division.

[60] At the ADCC tournament, Sousa won a bronze medal after defeating Rafael Lovato by decision and losing 3–0 to Yuri Simoes in the semi-finals.

[71][72][73] As a result of the allegations made against him, Sousa was dropped by his sponsor Shoyoroll and suspended from his team by the head of Checkmat Léo Vieira.

[74][75] In November 2021, Sousa contacted the website BJJ Eastern Europe to report that he had been found not guilty by an Independent Safeguarding Review Committee commissioned in London.

[76][77] The announcement of Sousa's return to competition caused some members of the BJJ community to complain that no victims had been contacted during the investigation and that the Independent Commission's report had not been made public despite multiple requests.