@Sterix I think much depends on what exactly it is you want to be known for
If it is the lyric/song writing only (ie you don’t want to be an “artist”) I would suggest a few approaches
The first, is to really push hard for a publishing deal, where you can find someone who has the contacts to push your material to the right people
Even as a “non-artist”, I think it would be best to have a finished “product” to sell - eg it is great having 100 different sets of lyrics - but, IMHO, it would be better to have 10 really good, finished, recorded songs as demos
This way you can send these around to bands, artists, and publishers to see if you can get more songs placed
If you don’t have access to a band, session musicians, studios etc. I think this would be a good investment if you really want to give it a go
For what it is worth, I think you have been doing EXACTLY the right thing collaborating with bands, and it is important to stop and recognise what you have already achieved as those Spotify stats represent some excellent recognition for your craft