I use Abbby Fine reader.
I have the desktop version, and the Screen shot reader is a tool I use daily. I forget how much it costs, but it is _well_ worth it.
The online service handles Fraktur is very cheap: https://www.finereaderonline.com/en-us
Any time there is an important document, I use a combination of the above to produce the best result possible, and then manually correct by hand.
Finally, my French and German friends help smooth over the tough areas, like page wrinkles during the original scan.