Having a bot living in your chat is the arguably the single greatest way to improve, strengthen and polish your stream. Bots grant you the ability to leverage custom commands, give your moderators more tools to do their jobs and can enhance the overall fun via raffles and giveaways.
When it comes to bots, there are plenty to choose from, depending on your needs. Simply do an internet search for "mixer stream bot" in your web browser and explore your options. Or ask a fellow streamer.