If you care about the artist here pay them directly either through bandcamp, by going to the physical shows and buying merch, ordering physical copies of their music at the label, patreon, or whatever form of direct support they have set up.

Spotify is just leeching of the culture and as drew pointed out you will be 10000 times more effective if you use one of those options.

Spotify is more or less just a signal booster nowadays - because you have to be on there since everyone uses it.

I for one would never put my music on Spotify, even if I get what like 20$ out of it, what a horrible company and service.