Movistar+ is the premium subscription television platform in Spain. It holds a significant portion of the rights to La Liga and, crucially, the UEFA Champions League.
If you are living outside of Spain, local broadcasters hold the rights to the Champions League, often at lower price points or through standalone streaming apps (such as Paramount+ in the United States, DAZN in various regions, or TNT Sports in the United Kingdom). Conclusion
The stability of the broadcast improves as more users connect to the same stream.