In this articel whe use Filzilla you can install it here.
1. Go to Configuration -> SFTP Settings
2. Open FileZilla
Follow this staps:
→ Copy the text Connection address on the panel and enter it at Host
→ Copy the text Username on the panel and enter it at Username.
→ At Password enter the password you also use to log in to the panel.
When you have entered everything, click on the Quickconnect button. You are now logged in to the SFTP of your server.
If this fails, our support team is happy to help!