My site currently seems to be under some filter because traffic and serps are much worse, than they usually were. I need help to determine which filter is applied.

The symptom is as follows. When searching "site:anydomain.com" google usually shows URL of top level domain first. But in my case the top level domain is shown somewhere on 45 page of search results.

The site is generalcomics dot com

Thanks in advance for your suggestions.
Michael