Hi @Amelie.costamagna 

Welcome to the Sonos Community!

I’m not personally familiar with Deezer, but I just added our test account to my system and when browsing to Deezer, I immediately see a Favourites section (with Tracks, Playlists, Albums and Artists sub-sections) - do you not see these too? When I tap on “Favourites”, there’s also a “Favourite tracks” section. In my testing, a newly liked track showed at the top of this list.

I hope this helps.