It's actually not that hard. I very rarely see advertising, and I didn't even make a conscious effort to do it.

I don't have a TV, I don't listen to the radio, I don't read magazines or newspapers, I pay a subscription for all the streaming services I use and I use ad-blockers when browsing the internet.

None of these are conscious choices to avoid advertisements - I would do all of them even if they didn't have that pleasant side effect.

The only time I see advertisements is when I take public transport - the underground in London is full of them, but they're pretty easy to tune out.