How to redirect after doing an action (submit) to the same page without getting a redirect error in Google Search Console?

Question

On the course page, there is a button for registration, and after clicking, it takes the user to another link to do the registration algorithm, then redirects the user to the same course page with a successful message.

I found an issue at the google search console dashboard that says 'Page with redirect', How can I fix that?

note: I use 302 redirect

ex https://it-sharks.com/course/learn-DBMS-fundamentals