It's interesting, Schur (artist name) hasn't had anyone ever review his music as far as I can tell, none of his tracks have ever got much traction on YouTube, none of his releases are even listed on albumoftheyear.org, low traction on SoundCloud too. He said he gets fans via Instagram (34 k followers). He's not on TikTok. Looks like he's not on any official Spotify, or other popular, playlists.
Schur's music does have a very catchy and upbeat vibe, I like his stuff. I guess it's possible he could have had a track featured on a TikTok video that went viral, without being aware of it.
So for him his best channel is Instagram. I noticed that he's using Insta ads, I'm getting them in my feed, but I follow him too.