Theme& website content disappeared after installing plugins and templets

I creat a website in WordPress with helping in woo commerce , its almost done! , but the problem started after i install some plugins and in mistake i think i install a templet !!! After that all my content has gone!!
I found the them that i installed but it wasn’t activated because my original them is activated but my content has swept with that new them content!!!!! I deleted this new them and i tried switching between themes but i cant get back my content!! Please help please!

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