As a free player in Clash Royale, countering a hog rider can be challenging, but there are a few strategies you can use:

1. Building a strong defense: One of the best ways to counter a hog rider is to have a strong defense in place. This can include a combination of defensive structures such as the Cannon, Inferno Tower, and the Tesla.

2. Using swarm troops: The hog rider is a powerful single-target unit, so it can be effectively countered by using swarm troops such as Minion Horde, Skeleton Army, or Goblins. These troops can quickly take out the hog rider before it reaches your towers.

3. Using spells: The Fireball and the Rocket spell can be effective against a hog rider, as they can deal heavy damage to the rider and its support troops.

4. Using the right timing: Timing is crucial when using any of these strategies. It's important to predict when the enemy will deploy the hog rider, and make sure your counter troops or spells are ready.

5. Using a combination of troops: A combination of troops like Minion Horde and Musketeer can be effective against hog rider. Minions will deal with the rider and Musketeer will deal with the support troops.

It's important to note that it may take some experimentation to find the best counter strategy for you, and that different players may have different preferences and strategies.