Where do you look for micro-influencers?

I feel like, for my product, micro-influencers are the most realistic way to approach marketing. But is spending days searching for them really the best way to go? (I don’t know — maybe, hence the question.) I’ve found some tools, but they’re pretty expensive, and I’m not sure which ones are worth using. Before I dive in, I wanted to ask if anyone here has experience with influencer aggregators — platforms that let you search by audience, size, and maybe even give you an idea of their average rates?