I lost my data, i just put new content online. but almost all my previously indexed inner page url are broken. meanwhile, I buy a few of links. finally my site ranking down dramatically. which reason? plz help me, it just ruin my life.
First think is that never buy any url it will directly harm not to your one page but it will effect your whole domain. So better not to do such things in future. Secondly if all urls are broken then you can make again active. Google will not harm your ranking for this url in shorttime.
Search engines hate broken links and abandoned pages. You need to fix this problem asap. Fix any broken links that exist on your site. If possible, use 301 redirects from any abandoned pages. Your problem likely has nothing to do with your paid links. Don't waste your time and money on advertising until you deal with your onsite problems.