I think I heard it put like this once (paraphrasing):

Ads aren't to make you buy the product. Few people are gonna see a regular commercial about chocolate and go out and buy it. That's not their intent. They're meant for brand recognition. They're about that moment in the supermarket when you have 50 choices of what soda to get. 40 of them are noname and store brands. You'll almost never try them unless you want to save some money and/or aren't interested in what you're buying. But then you have your coke and pepsi. The old reliables - the names that are stuck in your head since forever. And sometimes you'll want to check out the new mountain dew or dr pepper flavors, cause you're curious. But when you're not in the mood for new, when you just want a soda and don't wanna think about it, you'll get a coke or a pepsi or one of the few brands whose name you recognize.

After 1000 raid shadow legends ads, guess what you're gonna feel like trying in 3 months when you get bored of your current mobile game and are scrolling through their top picks for games? "Hmm, Raid shadow legends? I've heard about this before, maybe I give it a try"

Sure, it backfires sometimes - for example, I always make it a point to not try out a game if I feel it's been in too many ads - I don't wanna waste time in something that blew its entire budget on marketing. But with most people this doesn't happen. And I'm pretty sure even I tried some item from an ad that I said I'd never get - the name probably just got stuck in my head and I got it without even realizing it.

Marketers make a shit load of money based on human psychology. They wouldn't be doing it if it didn't work.

I wouldn't as that's just asking to get screwed

Yes, otherwise companies would not spend their money on them.