I have a previous experience in Capture One (C1) and the shadow recovery there is very easy. Let me give you an example. Here is the initial state of a RAW photo in C1:
If I want to see the figure's face (torso in general) without loosing (overexposing) the background, all I have to do is to crank up the Shadows slider to 100% and I will get the following image:
I can definitely play around and make the photo look better, but the main goal (shadow recovery) is done.
Now, in Affinity Photo, the initial RAW file looks like this (which is a bit darker than the one of C1, but I do not see an issue there):
If I increase the Shadows slider to 100%, it just turns black colors to gray and this looks absolutely awful:
All I could come up with was to increase exposure and brightness and decrease the blackpoint. I also increased the contrast a bit otherwise the image looked too washed out, and I decreased the highlights by 100% so one can see something in the background.
Still, the image does not look as good, the figure is darker than the one on the C1 result and the background is lighter. I cannot increase the exposure and decrease the highlights more because highlights are already on -100%.