Hello,
Sorry your hatch did not come out that great.
I myself have years of experience with trial and error incubating all types of eggs
from Bird eggs such as cocktiels , chickens, quails, reptiles etc.
If your humidity was to high, the egg will not be able to release enough moisture
from inside causing that wet mushy chick
On the flip side if your humidity is far to low then the egg shell will be to dry/hard for the chick to break out of.. Normally when assisting chicks in hatching a majority of the time the chick will die within a week or so.. So the best thing to do is let mother nature do it's thing and all strong healthy chicks will break out with ease.
I would advise to try 60's % humidity for the first 18 days then 80's humidity for the last 3 days.
This seems to work best for me and I have tried many different times.
Best of luck!
Regards