Have you considered adding a form of crossbuy for this game through Steam?

https://store.steampowered.com/app/204630/Retro_City_Rampage_DX/
Several games like this have included versions of their games for other platforms in the game's files, or in a DLC. Have you considered offering the apk of your game in the Steam version for a form of crossbuy? It could even just be in a DLC for a reduced price, rather than free. I'm just very curious about this and you would be the first game to do so which would get a lot of attention.