Fauxx is an open-source Android privacy tool that poisons data broker and ad-tech profiles by generating continuous, plausible, off-demographic synthetic activity from your device. The goal is simple: make your real behavioral signal statistically indistinguishable from noise.
Not my project, but though this is really cool and worth sharing.
I think what you’re looking for is AdNauseam.
Something like this is an interesting approach:
https://github.com/madereddy/noisy
AdNauseam works on pages you are visiting, as far as I understood.
Fauxx instead does its thing independently in the background.
Afaik that won’t really work due to pihole on my network.