Need Help and Advice

30 days back i started doing seo on 2 of my tech support websites and within 20 days i started getting ranking and traffic on both but suddenly after 3 days one of my sites stopped getting traffic, it got removed from, the other was working fine but that too has no dropped in ranking suddenly and now i dont have any traffic on it, suddenly it slipped to the 3rd 4th page, now bing wont show my first site on search page and the second site has slipped in ranking, i need some advice on what went wrong with both the sites since bing is not answering my questions and wont give me any solutions..!!!!!!!! so please help or advice me something...!!!

Hey please check your past activities what you did on seo. If you did any spam so it may be the reason. moreover do a complete audit of your site.

check your link juice, if it's spam take the required action and use proper content related in your main site.

Nope everything is fine on website and on the off page seo part....

Analyze the site, make sure the content is unique, on-page optimization, analyze the backlink profile to avoid spam link. Check with recent changes if you had made any.

Sounds like Chinese or adult backlinks added.

Might be competition jealousy

You need to analyze your site in detail,like do your site have content unique, on-page optimization, backlinks. Check each area carefully.