I play Minecraft Dungeon and always have 0/0 secrets in the wet swamp (play on adventure) why is that?

Di
5

Minecraft

Cr

If there's 0/0 there are no secrets. At least for the current round

Di

I restart the level all the time

Cr

It's random, if and how many secrets appear.

Di

Hmm, ok thanks, is that bad if I have already passed the level and then do it again?

Cr

That has no effect

Gaming PC config? cu cutenimble