If you're silent with the intent of remaining hidden, then that behavior must have been learned. Either you evolved from a prey type of species, or a non-apex predator.
It would be strange of humanity is the only apex-ish predator intelligent-ish life form in the universe that blasts signals into space without consideration of who might hear them.
As we transition to digital technology, our transmissions look more like broadband noise as opposed to having a strong carrier wave, cellular communications in 2025 are far less visible than, say, television broadcasts of 1975.
Deliberate attempts to communicate with other intelligent life are quite forlorn. This message was sent to a globular cluster 25,000 light years away
https://en.wikipedia.org/wiki/Arecibo_message
There a few 100,000 stars there, somebody there would have to be looking at our sun in particular at the right time, then it would take at least 25,000 years to get a message back to us, in which case it is likely that we'll be extinct, collapsed back to hunter-gatherers, or maybe advanced but forgotten that we sent the message or don't care anymore.
Or you learned it in a non-evolutionary way, through logical reasoning.
A dark forest planet need not learn to be a dark forest planet in the same way an earth colored beetle need not learn to perfectly mask itself against the dirt from a bird; the fitter mutation given the context of the environment won out.