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Then tracks aren’t available in your country or is  temporarily removed .

Some of the reasons for removing song ,songs or album from Deezer are RIGHTS' HOLDERS or TERRITORY 

Song and albums is removed because Deezer respect wishes of artists and rights' holders which choose to add or remove their music on Deezer platform . 

That's why some music isn't available or is temporarily removed from Deezer .

In other words ,music rights holder is not only artist by himself .
There is many others things which can decide about adding or removing music from some platform .
Music Rights Holder means any record label, music publisher, songwriter, artist, photographer, or any other holder of any rights in any sound recording, musical composition, artwork (including album art, liner notes, and other collateral works), chart, music database or other Copyright.

Deezer constantly updating and re-negotiating about agreements with artist and rights' holders ,and thousands of tracks are added to Deezer catalogue every single week.
Sometimes tracks are temporarily removed ,but can be add again on Deezer catalogue .

I'm sure that any artist want their music on all music platform , but sometimes rights' holders can be reason why is can be so .