[6] In October 2018, Łopata signed a two-year contract with Premier League side Brighton & Hove Albion, choosing them ahead of Bristol City.
[3] He helped to mark Mason Greenwood out of a game against Manchester United in the FA Youth Cup, with the assistance of teammate Haydon Roberts.
[7] He went on to make 19 appearances in all competitions for the Isthmian League South East Division side, scoring five goals and impressing manager Jude McDonald with his attitude.
[9][7] In January 2020, following a meeting with manager Dariusz Dudek, Łopata joined Polish I liga side Zagłębie Sosnowiec on loan until the end of the 2019–20 season.
[14][15][16] On 10 August 2021, Slavisa Jokanovic handed him his debut at Bramall Lane and he went on to play the full match in a 1–0 win over Carlisle United in the EFL Cup.
[26] Following five appearances for Darren Sarll's Cardinals, including a National League play-off quarter-final defeat to Bromley at the Kingfield Stadium, Łopata announced he would be leaving the club at the end of his contract in June via his Instagram account.
[30] Bobby Hassell, the club's interim director of football, noted that he "started the season in brilliant form and integrated smoothly into the squad".
[34] He made his debut at Vale Park in a 1–0 defeat to Leyton Orient on 6 February, earning praise from interim manager Will Ryder for his performance.