I know this isnt a good example as the number of runs isnt that high but i got 3 fortune boxes for over load 6 (easy) with 2 refils of 63 which gave me 1 rare and 3 epics i also got an epic from free chest and got 2 epics from silver boxes with the gold i got. This could be a buff to drops which is good. Although the epics were quite meh to me
just for some people not many though
Might be your bad luck.
DOn’t worry about it my luck is terrible.