Full site back-up

Dear friends,

I am new to WinSCP and in general not a real IT-literate. So please bear with me. In particular, it is almost impossible for me to find my way through the F.A.Q.s and forum, as I am missing the basic jargon.

I was managing a huge website for an association that is now meant to close soon. For the records and to honour all the hard work of the past 5 years, we wanted to have a full back-up of the website saved locally.

The site was based on Joomla and I have made a full back up just now.

What is the safest procedure via WinSCP to save it all, settings and contents included?

Thanks in advance for your precious help!
EU Events team

Download all files for a start.
But your website probably also uses a database. So you need to export the database to a file and download that too. That's not really a WinSCP question.
I would also expect that Joomla has a backup feature built-in.