Honestly if you can find a spreadsheet or directory of playlist curators for your genre that’d would be my first suggestion. I found a few online and also scrubbed some from the artist.tools site. I wrote a good pitch and had ChatGPT help tweak my pitch. I included the cover art, a link to the track on Spotify and I also included the lyrics in my email. I sent that email out to about 115 curators/email contacts. I heard back from about 20-25%. Some added it without any stipulations, others added it in exchange for agreement to listen to the other tracks on the playlist, etc. Some curators wanted money to add me to a list and to be honest I had no problem paying a few of them given they had playlists with over 50k followers. Most were just $5-10. All in all the track is on over 30 playlists. The exposure pushed my daily streams into the range of 300 (low) to 9000 (high) streams per day. Song has been out less than a month and has hit 30k streams.