First time owning a smartph*ne for travel purposes.
What are the basic steps to stay away from ads and nagging that I need to know about?

Already set it to silent mode and removed notifications from unimportant apps.
Are there specific browsers, extensions (apps?) that I should get to block as much garbage as possible?

I don't intend to go full-on privacy freak; as much as I hate the Antichrist there is no negotiating my way out of espionage and sharing my asshole prints with my provider/Samsung/Google if I intend international travel to go smoothly.

But if I can at least browse the Internet without being ad-raped and asked about cookie and terms & conditions in every single website, that'd be swell.
I was shocked when I attempted to do it on a relative's phone, I had no idea the Internet had gotten that bad without my dozens of desktop applications added throughout the years.