Do you have some results?

Correctly configured firewall doesn't affect SEO or rankings.

Unlock the doors to a happy and successful love marriage with Astrologer Guru Amit Ji, a renowned Love Marriage Specialist. With years of experience and profound knowledg...

If possible, please provide the URL of the blog.

You can appeal for the wrong decision made. Check here, https://support.google.com/legal-help-center/answer/13965229?hl=en

While it is a positive thing to have low spam score, it has nothing to do (directly) with your ranking positions. So I wouldn't be looking for a relationship there. Also,...

The reducing traffic must be due to some other factors and not due to spam score. It must be investigated.

Well, sounds like error 404 occurred at the time of crawl. I'd check you web server error log for the day.

Thank you. issue resolved.

On-page SEO focuses on optimizing individual web pages while off-page SEO focuses on activities outside the website to enhance the site's authority and visibility.