Two things, there are no wolves in the Two Rivers?
No, even in the books Slayer had driven them off with his targeted hunting of them.
Which is one of the weaknesses of the whole story and a bit of a lazy idea because it limits the agency of the characters.
That the show doesn't let that become too much of a problem is actually respectable.
Thing is, it's not actually that simple in the books. The show just doesn't have the time for detail.
Perrin arrives, and immediately finds out his plan to sacrifice himself to save his family is moot, so he's bundled off to the old sickhouse to hide.
Where he finds out that other people are hiding, people more receptive to his idea to rescue the Two Rivers folk taken captive by the Whitecloaks, some because their family is captive, some because they're Aes Sedai and have great expectations for Perrin.
Along the way across the Two Rivers, he speaks to a few families, and opens their eyes, getting them to evacuate to the town for mutual defense. He also gathers a bunch of young men seeking what they imagine is glory and adventure.
At the Whitecloak camp, he stages a successful rescue, and he and the young men serve as a diversion for the Whitecloaks to chase while the rescuees disappear into the night.
Then he takes the boys hunting Trollocs, and they do pretty well until they walk into an ambush, and even then Perrin is able to rally them back together, keeping the Trollocs from simply picking them off one-by-one.
He returns to town, and finds out his reputation has gotten a bit out of control, and he becomes their de facto general.
Through the whole sequence, Perrin is revealed to more and more of the Two Rivers as actually pretty good at being a leader and general. This isn't just the Pattern at work turning the odds in his favor. It's probably putting its finger on the scale, opening people's eyes to arguments and possibilities they'd normally dismiss, lining up coincidences. But it's because Perrin is the right man for what's coming, and the Pattern needs him in the right place.
I don't think it's a lazy idea, because it takes something that would exist anyway, narrative convenience, and turns it into something the characters themselves can interact with and even try to fight or take advantage of.