Old ipod cant find on i tunes


New member
Hi all. Sorry if this has been posted before but, I lost my I pod a few weeks ago and that had all my favourite tunes on it. A lot of the tunes were youtube music converted to mp3.

I'm now using my old I pod which has the smaller screen. It does have a lot of the music I had on my lost one but how can I get the tunes from this I pod to appear on I tunes? When I connect this ipod nothing happens. When I connected my lost ipod all the music on it came up. Anyone with any idea. I'm not a tech savvy person.
Kind regards Denn.