Go to .env file
Change
MAIL_DRIVER=smtp
MAIL_HOST=mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
MAIL_ENCRYPTION=null
to
MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=465
MAIL_USERNAME=ENTER_YOUR_EMAIL_ADDRESS(gmail)
MAIL_PASSWORD=ENTER_YOUR_GMAIL_PASSWORD(gmail)
MAIL_ENCRYPTION=ssl
Laravel