Lubala was born in the Democratic Republic of the Congo and raised in Leicester, England, where he attended St Paul's Catholic School.

[12] With Che Adams suspended and Isaac Vassell and Sam Gallagher injured, he was included on the bench for the Championship fixture at home to Burton Albion on 7 April.

[13][14] He remained unused, but made his debut three days later, away to Bristol City, replacing Jérémie Boga after 69 minutes with his team 2–1 behind; the match ended 3–1.

[18] On 21 June 2019, Lubala signed a two-year contract with Crawley Town, managed by former Birmingham City coach Gabriele Cioffi.

[29] He made his debut on 3 September as a half-time substitute with his side 1–0 down at home to Hartlepool United, and headed the equalising goal from Cameron Coxe's cross in the fifth minute of stoppage time.

On 17 September 2024, he became the first Wycombe Wanderers player to score four goals at a home game since the club was promoted to the English Football League, during a Bristol Street Motors Trophy match against Brighton and Hove Albion’s Under 21s team.