The broadcasting rights for the UEFA Champions League can vary by region and country. In general, some of the major broadcasters of the Champions League include BT Sport (UK), Sky Sport (Germany and Italy), beIN Sports (Middle East and North Africa), ESPN (USA), and Sony Ten (India).
You can check the official website of the UEFA Champions League to see a full list of the official broadcasters in your region.
However, you can check the official website of the UEFA Champions League or the broadcasting channels that have the rights to stream the matches in your region.