Does having tag pages in your site increases content duplicacy?

In my finance website I put so many tags pages on each pages. I have written more than 700 articles in it.

My problem is I have checked my site in sem rush tool and have found the same issues which I have discussed above.
My content I 100% percent original and unique
But with tag pages its creating duplicate pages.

Please suggest me how should I increasey traffic organically

Please help us out as our traffic has gone down trendiuosly.

I you want I can share my sire name also.

Poster :