Google asks visitors to agree to personal data collection the first time they visit Google Search: https://i.imgur.com/jRl3ui0.png
Some of this data collection can be turned off, though it appears not for all data categories across all Google services. Visitors are not offered a clear way to access, export, or even delete all personal data collected on them by Google.
The way several Google services are collecting personal data is in breach of GDPR.