Since your request is a bit of a "shorthand" for "twitch viewers free," I've put together a brief guide—essentially a "cheat sheet" or summary paper—on how to grow your audience without spending a dime. The consensus among experts is that while "free bot" services often lead to account bans, organic growth is the only sustainable way to build a real community.
: Collaborate with other creators. Real growth often comes from being part of a community rather than just broadcasting to one. Crucial Facts to Know twitch viewers free