I typed Lux Protocol on youtube search and nothing. Make a short video about the game, add tags like android/free/brain game etc. Even if the game is on some reviews already there. When ppl will type “new android games” your game will come up. I search for new games on youtube all the time and if I like what I see, I go and download.
I am no pro in this, I just started getting into making games and hopefully will release one someday. But I played hundreds and I found many by typing “new android games” on youtube.