I follow several influencers on Instagram and YT with over !M subs that have been locked out of their accounts with no explanation and no response to their information requests. One opened up a Twitter/X account to try to request help, but unfortunately, since that account was new, he didn't have much traction.
Google business account. Which is different than a Google ads account - I was able to get in touch with Google ads support easily but they said the two departments can't talk to each other. It took several weeks to get through to business account support.
Edit: and note, I log into both of these via my personal Google account, which is also a different thing.