Following are the basic settings you need for configuring an FTP Client:
Host/Hostname - the hostname is ftp.yourdomain.com, eg ftp.garysautos.com
Username - your cPanel username.
Password - your cPanel password.
FTP Port - this should be set port 21, which is the default.
For configuring Filezilla use the following settings:
Protocol - FTP
Encryption - Use explicit FTP over TLS if available
Logon Type - Normal
Account - Leave blank
Also, under the Edit menu, under Settings, select Transfers to edit the Transfer settings:
Set Maximum simultaneous transfers to 1.
Set Limit for concurrent downloads to 1.
Set Limit for concurrent uploads to 1.
After connecting you will initially get a popup asking you to confirm the security certificate. You should click confirm to allow for a secure connection.