Pages, Media, Sliders lost after fresh Install

Hello,

I’m in big trouble. Yesterday, when I was going to my website, I had php errors, impossible to connect to my dashboard, and kicked out from my SQL Database… A nightmare…
So I installed a fresh WordPress, did an upload of my backup. I also created a new database and imported my old database inside.
Now, I have access to dashboard and my data base but I don’t see any media or pages. I checked and my medias are in my wp-content. I guess I’m missing something. Does someone has an idea please ?

Thank You !