Hi @darreni2021, thanks for reaching out.

The acquisition of music is handled through negotiations between artists and right-holders.
As such, we do not have direct control over this process, I cannot guarantee that we will be able to maintain the song you wanted,

Nevertheless, if you have a link of any song that is no longer available to preview or if you have taken some screenshots of them, please share with us so I can have a deeper look.

However, if you have an active subscription, you can upload the song to your personal MP3 section on Deezer and subsequently add it to your playlists.
Here is the step-by-step guide to assist you in this process.