How to fix Android application that got rejected by google play store due to Eligibility Issue?

You have to update your target audience and Content, Maybe Your app's content that is accessible to children must be appropriate for children, know more pls click here

Apps with unintentional appeal to children.

We want to make sure that apps with a content rating below T that are not designed for children don't inadvertently attract them.

If your app is not designed for children but your listing contains marketing elements that may appeal to them (such as youthful animation or young characters in the graphic assets), choose Yes. This is not an acknowledgement that your app appeals to children, but is your consent to apply a banner to your store listing that says “Not designed for children.” This helps parents know that your app is not designed for children.

If your app is not designed for children and you believe that your store listing does not contain any marketing elements that may appeal to children OR if you’re unsure, select No. No special designation will appear in your store listing.