If you've come across a URL like r2.sn-gxuo03g-ig3l.googlevideo.com and wondered whether it's safe, you're probably dealing with a backend server used by Google's video delivery network. This isn't a website you're meant to visit directly, which explains the 404 error and invalid SSL certificate for that specific hostname. It's part of the googlevideo.com domain, which is a legitimate Google infrastructure used for streaming services like YouTube.
There's no reason to trust it with personal data because it's not set up to collect any. The technical issues here are just misconfigurations for direct access, not signs of a malicious operation. If you see this hostname in your browser's address bar unexpectedly, it's likely just a video resource that couldn't load properly, not a phishing attempt. Google's infrastructure is well-monitored, and the domain itself is clean of blacklists and malware flags.