Ranking problem (Tags rank but main URL No)

Hi to all and sorry for my english

i have this wordpress blog and a week ago my posts were ranking perfectly for a bunch of keywords
but in the last 4 days i noteced that my posts no more showing in google results (in this week i add a wordpress plugin for auto translation called Transposh and i deleted it the same day)

i thought it was google deindex them .... but after a day i ranked again
and there comes the problem .... the ranked URL's are the Tags URL's and not the posts URL
and whenever i want to rank for new keyword the Tags URL rank and main post URL don't even show in the results

how can i fix this kind of strange problem guys ?

Installl Yoast SEO and set your tags to noindex, should fix the problem.

Peter Ngo said:

Installl Yoast SEO and set your tags to noindex, should fix the problem.

Click to expand...

thanks for your replay
what i want to know is not how can noindex my tags but i want to know how can i get back my post ranking

didic said:

thanks for your replay
what i want to know is not how can noindex my tags but i want to know how can i get back my post ranking

Click to expand...

Noindex your tags will/ might get your post ranking back, that is basic on-page SEO, indexed tags for new sites can cause confusion to Google.