If the reason you want something without lyrics is so that you can focus on other stuff, you could consider songs in other languages. There's so much content out there to explore, and you might be able to find stuff in a genre that you already enjoy. I don't find it distracting, and it's fun finding new artists I otherwise would have never tried.
When I want pure instrumental, I usually go "instrumental {{genre}}" and just save the playlists.