If you are looking for the most reliable sources, these community-vetted repositories are the gold standard:
This specific figure refers to massive, automated collections like the iptv-org project, which currently catalogs over 10,000+ channels from nearly every country. Top GitHub Repositories for 8,000+ Channels iptv playlist github 8000 worldwide
You do not need to download the files; you only need the provided in the repository's README. If you are looking for the most reliable
The most comprehensive collection available. It offers a "Main" playlist with all channels, as well as specialized links grouped by category (sports, news) or language. automated collections like the iptv-org project