Hi @Rachel Paxton50, In your form settings, have you selected "show a success message" instead of "redirect to an expternal page"? (see pic 1)
Are you auto-confirming new subscribers? If so, that could be your problem. You might want to send them an incentive email instead of autoconfirming so they stay on your page and see the success message. BUT, if people are excited to subscribe, and you ask them to check their email to confirm, then of course they wil bounce! In this case, the bounce rate is a GOOD thing because they're doing hat you want them to. (see pic 2) Once they're in your email queue, you can send a welcome email to bring them back to your site.