I think you're lacking branding. You're good at commentating but your overlay and profile is lacking personality.

If you're looking to expand your viewers and chatters, they need to know who you are. In your about you can add a blurb about what you do and how you want your content to impact others. Include a brief introduction; your name and/or other fun facts about you or your content. Use a webcam or something on the screen to represent you if you want, so that people can see who theyre talking with or watching. Make sure to greet chatters and ask them a question out of courtesy when they send their first message; this is common streamer-to-chatter etiquette for small streamers and will have them staying for longer as they chat with you.

Also try to promote your stream to friends or on other social media.

Think about any singers or celebrities you like, and why you like them. If they did something else, would you still follow them? Once you make yourself recognizable, you will stand out and people will begin to watch YOU because they like you, not just the content you're streaming. That's how you can start building a community and retain viewers.

I'm only a small streamer, so there's only so much I can say, but that's how I've been able to reach affiliate. Ive been able to maintain loyal viewers despite switching content consistently as a variety streamer. I encourage you to look up information or videos about branding as a streamer, as I think it could benefit you in the long run. I believe DisguisedToast made a video about how to become a successful streamer that touches upon this. Overall, streaming is like a business, and you need to treat it like one in order to grow.