Spying on push/pop ads

Is there a free way to spy on push/pop ads? For example; I'm interested in browsing ads for parasite cleanse products in Indonesia/Philippines/Thailand. I know about anstrex and adplexity, I wanna know if there is a free way like specific google dorking, or tools that have a free trial.

For push/pop, trying to find free spy methods is usually a dead end if you're looking for actionable intel. Those ads are dynamic and often geo-locked, not easily indexed or found with dorks. You'll spend more time chasing ghosts than finding profitable angles. Seriously, invest in a proper tracker if you want to see what's actually converting.