Open the Contacts app on your phone
Tap the menu or profile icon
Go to Settings
Select Import/Export or Manage contacts
Choose Move contacts to Google account or Export to Google account
Select the contacts you want to back up
Choose your Google account
Confirm the backup or sync
Turn on Contacts sync in your Google account settings if needed
Open Settings on your phone
Tap Accounts or Passwords & accounts
Select Google
Choose your account
Turn on Contacts sync
Wait for the sync to complete
Check contacts.google.com to confirm the backup
