For Gmail, Chat, and Meet:
Go to Gmail.
Click Settings > See all settings.
In the “General” tab, scroll down to “Smart features and personalization.”
To turn smart features on or off, check or uncheck the box.
Smart features in Gmail, Chat, and Meet that use your data include:
Email nudges and high-priority notices
Writing and intelligent search suggestions
Smart features in other Google products that use your data include:
Reminders for bill due dates
Restaurant reservations and pickup orders on Google Maps
Suggested offline maps for travel
Cloud search showing search results from Gmail.
In Google Calendar settings
Go to Events from Gmail > Check the box next to "Show events automatically created by Gmail in my calendar"