Swift_TransportException in AbstractSmtpTransport.php line 404: Connection to smtp.gmail.com:465 Timed Out

My goal is to activation link to send my registered users

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Here is settings in my .env file for SMTP

MAIL_ENCRYPTION=null
MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=465
MAIL_USERNAME=myemail@gmail.com
MAIL_PASSWORD=mnksdufunznvbiun <--- I got this 16 digits from Google 

Did I missed anything ? I kept getting :

Swift_TransportException in AbstractSmtpTransport.php line 404: Connection to smtp.gmail.com:465 Timed Out

via Chebli Mohamed