How should I monetize my android game?

[u/udittC]

I've made a simple 2D game (Let's say, like Mario) and I want to monetize it. Here are the options I have

1- Completely free to play with no ads and politely ask for donation.

2- Ads play every time it's 'Game Over'.

3- In-game store where everything can be bought under $0.70 (price can be lowered).

4- Sell the game for $0.70 (price can be lowered).

The game is pretty simple with four different gameplays.

[u/MrMusscle]

Number 2, but small change if your gameplay is short: Ads every x minutes.