Google’s default data protection does not protect you against human error, malicious actions, ransomware and hackers, and synchronization errors. So, as much as Google will likely never lose the data you are storing on their platform, they do not cover you if the data loss happens from your side. You are responsible for ensuring the necessary protection of your data.
Based on an Enterprise Strategy Group Survey, only 13% of the businesses surveyed understood that protecting their SaaS data is their responsibility, not the responsibility of the SaaS vendor.
https://www.esg-global.com/research/esg-master-survey-results-2021-data-protection-cloud-strategies