Seems like a promising concept as real alternative to Google/Bing.
Initially I couldn't figure out how to spell it and this doesn't help to grow the branding. Apparently it's pronounced "mumble", so I recommend they just renamed it to mumble for better brand recognition. It's way easier to spread the word.
If you already an expert in python, you can keep doing that and build a frontend in python using Dash. They have bootstrap components and mantine (React) components for options of style you might prefer. Don't need to write JS or HTML. It's enterprise grade and widely used by large enterprise projects.
Another is Reflex but their open source version is tricky to run in production. They promote more of their cloud version or enterprise license.