I used to love Pokémon go and play it almost everyday however now unless you constantly put money in the game you can't play it properly. You have no way to sufficiently earn enough coin to buy you things in game. You also don't get enough resources if you battle often as you run out of revives and then as mentioned above you have to put money into the game to get it. Pokestops do not give enough resources to help with this as where I work we have 4 stops yet I still struggle.