Node placement not random

[pjake12]

when running the simulation, the node placements are constantly positioned like this. How can I make the placements random?

[n-jay]

If you're using the StationaryMobility module, then nodes are indeed placed randomly but deterministically. Meaning that the positioning does not change.
I believe this can be changed by passing the seed value in the .ini file.

I recommend you looking into the Mobility model doc for further details.
https://inet.omnetpp.org/docs/users-guide/ch-mobility.html#stationary