Discovering influencers that closely align with your target audience on Instagram can certainly be achieved. Here are a few strategies you could consider:

1. Keyword Search: Use targeted keywords related to your industry or brand on the Instagram platform to find influencers speaking on relevant topics. For instance, if you’re in fashion retail, words like “fashion blogger” can be helpful.

2. Competitor Analysis: Look at those influencers who are already engaging with your competitors or akin brands. They’re likely to be influential among your target audience too.

3. Use Influencer Marketing Platforms: Platforms like Flinque can help streamline the influencer discovery process by providing detailed analytics of potential influencers.

To evaluate an influencer’s authenticity and engagement levels, consider the following:

1. Engagement Ratio: Check the ratio of their follower count to the engagement they receive, including likes and comments. A high rate suggests authenticity.

2. Audience Quality: Tools like Flinque allow you to examine an influencer’s follower demographics, ensuring they align with your target audience.

3. Content Quality: Authentic influencers consistently create high-quality, original content.

4. Past Partnerships Successful collaborations with other brands can also indicate an influencer’s authenticity and value.

5. Returning Engagement: If an influencer’s followers are actively engaged in ongoing dialogue, it’s a good sign of authenticity.

Flinque is a platform that particularly excels at helping brands dynamically discover and evaluate influencers. Features include detailed influencer analytics, audience demographics, historical data for an influencer’s previous campaigns, real-time campaign metrics, and more. Keep in mind, different tools suit different needs, so what works for one brand might not work for another.