Coins?

Ive been playing this game for about 6-7 days, and Im on level 13. Ive been to many pokestops and gyms. The only way to get coins besides paying real money is by claiming a friendly gym. Ok sure, but I dont think Ill find any gray gyms. But if there are any, maybe you should add a map view and mark out the unclaimed gyms (I still doubt that there are any). And if there arent any gray gyms, well I have no way of getting coins. I think you guys should add more ways of getting coins than just assigning pokemon to gray gyms. I get that the game is free and you need money but still, I really need coins. Please reply and read this!!!

minionshello about Pokémon GO, v1.39.0