Apps like TiviMate (for Android TV/Firestick) and IPTV Smarters (available on almost all platforms) are the industry standards for M3U and Xtream Codes.
Xtream Codes: Xtream Codes was a widely used IPTV management system and control panel that many IPTV providers used to manage subscriptions, generate stream URLs, and provide credentials for user access. After a major law enforcement shutdown of the original Xtream Codes platform in 2019, many clones and alternative panel systems emerged that replicate similar functionality. “Xtream Codes” credentials usually include a username, password, and server URL which can be entered into compatible apps. Free Stb Emu Codes And Iptv Xtream Codes M3u Playlists