Watch at least 2 episodes on Netflix/Prime/Disney+ without subtitles.
If you want a challenge, listen to something English and something American or Australian or South African.
British series: Bridgerton, Dr. Who, Peaky Blinders, The Crown, Luther
American series: The Queen's Gambit, Cobra Kai, Tiny Pretty Things, The Haunting of Bly Manor
Australian: Deep Water, Heartbreak High
South African: Distric 9, Chappie