I would never switch from MacBook because I love Finder THAT MUCH. I enter and search term and find file containing that word in the filename and file contents. From there, it's infinitely configurable. It the only reason I can find 95% os the stuff on my disk.
But, I am considering an iPad. But, if the Finder App does not have that search capability, it may swing me to buy a cheaper Windows table with Windows 10.
Does the "Finder App" on a new iPad support a search by filename? File contents?