In September 2020, he took part in the 2020 PDC World Youth Championship, advancing from group stage to the second round, where he again lost to Meikle, this time 0–6.

[citation needed] In the first round, he faced Jim McEwan, achieved a nine-dart finish, and won the match 6–2.

In the following matches of the tournament, he defeated Jitse Van der Wal (who also hit a nine-dart finish against him) and Derk Telnekes.

In September 2021, he won his first PDC Challenge Tour title in Niedernhausen, beating Kevin Doets 5–4 in the final.

Two months later, in November 2021, he won his first PDC Development Tour tournament beating Geert Nentjes 5–4 in the final.

In this tournament, he achieved his best PDC result to date, beating Matt Campbell, Joe Murnan, Keegan Brown, Ritchie Edhouse, Ian White and Ryan Searle to reach the quarter-finals.

[2] In April 2022, he took part in Denmark Open, his first senior WDF tournament and won the title, beating Ben Hazel, Andy Baetens, Dennis Nilsson, Shaun McDonald along the way before defeating Darren Johnson 6–1 in the final.

[9] In the second round, Poland faced Belgium, with Białecki playing Kim Huybrechts in a singles match to start the contest.

He lost the match 2–4, with Ratajski's loss to Dimitri van den Bergh sealing Poland's elimination.