You can find TMs in other locations, such as:
* Buying from shops: Some shops will sell TMs.
* Finding them in the wild: Some TMs can be found hidden in the world.
* Receiving them as rewards: You can sometimes earn TMs as rewards for completing tasks or winning battles.
* Trading with other players: Other players might be willing to trade you TMs.
Note: The Game Corner in Fire Red is known for its slot machines and other gambling games, where you can win prizes including rare items and Pokémon. While you won't find TMs there, it's a good place to earn some valuable items.