Many developers maintain "legal" IPTV lists on GitHub that aggregate free-to-air (FTA) channels from around the world.

While the idea of 10,000 channels sounds great, there are significant downsides to "mega-lists" found for free online: 1. Link Decay

Many large-scale M3U playlists contain copyrighted content without authorization. Additionally, downloading files from unverified sources can expose your device to malware. when testing M3U lists to protect your privacy and data. Tips for Finding a Quality Playlist