Approval is not based on the number of social media followers. Whether you have 1 follower or 100,000, you will be considered.
It's all about the feedback. Are you providing feedback for the books you receive?
NetGalley recommends keeping your feedback ratio at 80%. We're looking for a feedback ratio of at least 60%, a review within the last few months, and an updated bio within the last year.
Reviews on Goodreads, Amazon, or other retail or social media platforms are appreciated but not required.