Email Bugs On Setting

Your software
My Mautic version is: 4.4.5
My PHP version is: 7.4
My Database type and version is: MySql 106

Your problem
My problem is: I Installed Mautic in public folder and started settings. I inserted my email and save the settings.

These errors are showing in the log: Save changes to the configuration to send a test email. I tried sending a mail and nothing has been received

Steps I have tried to fix the problem: Nothing!!! don’t know where to start.

Hi, do you use an email provider or you want to send emails from your server using your own smtp server?