I followed these steps like the website Techgara said:
Go to Contacts
Tap Menu, then select Contacts to Display
Select Device (usually a blue phone icon). After this, only the contacts on your phone will appear
Tap Menu again and select Merge Accounts
Select the Merge with Google option, which...
Do not turn your anti-virus off too quickly. There's no way the software gives a false warning. Everything has a reason. If your downloading is not from the official website, you should scan your computer once again. It's an experience I got from Techgara.