But cloudflare can only be used safely with R2. If you use it as a CDN for your app, you have to be careful about section 2.8 of their TOS. If your usage is mostly caching a JSON API response, you are technically in violation.
Yup, that's why I said use R2 and its still cheaper than bunny, since they charge per transaction instead of bandwidth usage and its unified price for all areas.