There's no magic number of followers you need to have to become an influencer. However, if you want to be taken seriously as an influencer and have brands approach you with opportunities, it's important to have a sizable audience.
How large your audience needs to be depends on several factors, including your niche and the types of content you produce. For example, if you're a fashion blogger, you'll likely need a larger following than if you're a personal finance blogger. That's because there are more fashion bloggers out there vying for attention from brands, so you'll need a bigger platform to stand out.
If you create high-quality content that resonates with your audience, you can build a loyal following even if you don't have tens of thousands of followers. And once you start working with brands, they'll help promote your content to their own audiences, which can help expand your reach even further.
So while there's no one-size-fits-all answer to the question How many followers do I need, the general rule of thumb is that the more followers you have, the better off you'll be as an influencer. So focus on creating great content and building up your audience over time – eventually those follower counts will start adding up!