I know you guys are a rather small team and can’t afford big advertisements millions will see, but you still could try and actively encourage people to tell their friends about it.
1 idea I have that might accomplish this is referral rewards (refer 1 player to buy the game and get a thing, refer 5 people get another thing, etc.).
Or you could just straight up ask people to tell their friends about it. That might work too.
And so ends my babbling