Worth noting that the absolute best quality Deezer has is 44,1kHz 16-bit lossless, and most songs there are MP3 anyway.
If this is good enough for you, absolutely go for it. If you're looking to download high-quality music from a streming service, you can use tidal-dl (or tidal-gui for more convenience) combined with Tidal - though it's worth noting Tidal has been subject to some controversies regarding some of the master quality albums, too.
Worth noting that the absolute best quality Deezer has is 44,1kHz 16-bit lossless, and most songs there are MP3 anyway.
If this is good enough for you, absolutely go for it. If you're looking to download high-quality music from a streming service, you can use tidal-dl (or tidal-gui for more convenience) combined with Tidal - though it's worth noting Tidal has been subject to some controversies regarding some of the master quality albums, too.
Can't comment on FLAC quality / availability to be honest because I download only 320 kbps MP3. I just know there is a quality setting for it.