To find and communicate with a bot, users can search within Telegram or open it via a direct link. On Telegram, bots can be identified by the suffix "bot" in their names. While normal bots are public, they can also be limited to certain users through private Telegram channels.
Anyone can find them in Telegram search and join. Private channels are closed societies you need to be added by the owner or get an invite link to join. Please note that private channels with publicly available invite links will be treated in the same way as public channels, should it come to content disputes.