You could of course sue Google, but that's an extremely expensive and time-consuming option, rarely worth it for a mere consumer. Going to court certainly won't make your suspended account become unsuspended any quicker.
Just think about the army of "Facebook content moderators" who were a popular topic on HN recently due to the concerns over their mental health.
(I am offering no solutions here, for I know none)
Maybe they really just need to offer a paid account option with real support, since that has much better incentives
https://workspace.google.com/pricing.html
It includes support, but I'm not sure if that helps in cases where google thinks you have abused the service. I just use it because I like having my own domain, and so that I don't lose access to my email if google locks me out. The idea is that I can update my domain's MTX records and use another email service.