The results from Kagi's speed test widget and the official Cloudflare website are quite different. As you can see in the image below, latency is especially high, so I think I'm connecting to a server that is far from me.
Looking at the browser's network log, it connects to https://speedtest.kagi-0e7.workers.dev/


My suggestion is:
Show a list of all available servers so users can select one and see which server they're connected to.