I have a hard time understanding your opinion. What do you even mean by garbage? There's thousands of legitimate music bands/musicians on these platforms. Naturally you won't care for a majority of it, but an interpret being niche doesn't make them garbage.
FWIW I went through a phase of this (feeling like streaming services were full of low grade stuff) until one day when basically nobody seemed to understand me except Amazon Music, which has an almost eerie recommendation mechanism that I think people don’t talk about much because the rest of the app is so meh.
In one single afternoon Amazon
Music served up loads of niche old favourites I had not thought to search for, introduced me to a couple of artists I would not have known existed otherwise, and probably rescued my failing love of music.
I now play a game with it and pick somewhat diametrically opposed aspects of my music tastes in quick succession— Superorganism, Cardiacs, Gavin Bryars, Nanci Griffith, Vivaldi, Anouskha Shankar, say — and then see what it comes up with. Invariably one of the recommendations will be something I already adore and one will change my life.
I stumbled into the Chris Thile multiverse this way, for instance.
So dont listen to it? I mean what is the problem here.
I never listen to basically anything spotify recommends me, just songs from bands I already know and love. And if I were to purchase the whole discography of the breadth of music I listen to it would cost the down payment on my house