If your not good at slots you can purchase coins instead.
Chat with our AI personalities
The team rocket game centre (it costs 3,500 coins)
there isnt i am sorrry
It is found at the Celadon Game Corner and must be purchased for 4000 coins.
To get TM35 - flamethrower in FireRed, you have to go to Celadon City and win it for prize coins at the casino. I think it costs 4000 prize coins, so you'll have to play at the casino a lot or waste a lot of money buying coins.
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.