This is the 11737th most frequent Swedish word.
personal
Staff; personnel.
In this context, 'personal' refers to 'staff' or 'employees' collectively.
Personalet på sjukhuset var väldigt hjälpsamma.
The staff at the hospital were very helpful.
Here, 'personliga' (adjective form of 'personal') means 'individual' or 'private'.
Jag behöver ordna mina personliga dokument.
I need to arrange my personal documents.
'Personlig' (adjective form of 'personal') denotes something belonging to or originating from the individual.