Here you can get up to 4000 installs and 400 ratings for free. Limited time only.
https://android-app-promotion.com/free-installs-and-ratings/
You agree to pay, you can get much more at https://android-app-promotion.com
how does this 4000 free installs work ?
Free installs you will get for links to Promo.
Installs will come form dedicated devices with dedicated users. They will install your app, do ratings or reviews and hold you app on their devices forever. Those users will never use your app.
Installs and ratings helps to increase your app rating in Google Play. Higher rating attract real users who will use your app.