While Soulseek is a great option, would recommend Deemix as the primary download method unless Deezer hosted album is some very bad remaster and you need to hunt down older release. You either need a premium account or find something called "ARL cookie" to download above 128 kbps MP3.
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.