The URL https://policies.google.com/privacy hosts the official Google Privacy Policy. It explains what information Google collects, why they collect it, how it is used, and how you can update, manage, export, and delete your data. What Google Collects
Google gathers data across its ecosystem (Search, YouTube, Android, Maps, and Chrome) through two main avenues:
Things you create or provide: Account details (name, email, password), created emails, uploaded videos, saved photos, and documents.
Data collected from your usage: Search queries, watched videos, ad interactions, purchase history, device hardware models, operating systems, IP addresses, and location data. This happens whether you are logged in or using services anonymously. How Google Uses Your Data
Google explicitly states they never sell your personal information. Instead, they use it to: Google Privacy Policy