Born in Belo Horizonte, Lázaro began his career with Flamengo and made his professional debut for the club on 27 September 2020 against Palmeiras.
[2] Lázaro scored his first professional goals on 27 January 2022, netting a brace in a 2–1 Campeonato Carioca home win over Portuguesa-RJ.
His first goal in the top tier came on 21 July, as he scored his team's fourth in a 4–0 home routing of Juventude.
On 1 September 2022, Lázaro moved abroad and joined La Liga club Almería on a six-year contract,[3] for a rumoured €7 million fee, with Flamengo keeping 30% of a future transfer.
[4] Lázaro made his debut for Brazil at the under-17 level on 12 March 2017 against the United States U17.