Can i use Finder

On advice in an Apple store, i have bought Ipad Pro 6th generation instead of a Macbook.

I use it for internet/ text and e-mailing for work. So i do use it like if it is a Macbook.

Now i have i really have problems with managing my documents, because i do not have Finder on my Ipad.

Is it possible to use Finder on this Ipad…. Or was the advice wrong and should i have bought a macbook instead..:(