There is a distinction between being paranoid and careful. Lets say we are talking about your physical mailbox in front of your house. Everyday you come home and it is stuffed with ads and you need an hour to sort out important letters and stuff. So you put a sticker on it: no commercial flyers and stuff. This will keep away 80-90% of annoyances.
Then there is this company that promises to keep away everything, but to do it, you have to give them the key to your house and the allowance to read all your letters. Will you do it?
People are less careful when it comes to computer stuff but in reality if you do online banking, shopping, Paypal, crypto, you may have a lot to loose.
Yes it should be. But imagine you want to visit a page asap. And then you can choose: accept all cookies or click through a plethora of text and cryptic options. It's like reading the EULA of a computer game you will play anyways, no matter what.
Be aware that there is the possibility that someone can read your banking data and crypto or other stuff you do with your computer.
Firefox and Ublock Origin or Brave Browser as others have stated.
Firefox&Ublock works as well as Adguard and Brave Browser seems to be a little bit better even.
With Safari you are limited, but this is Apple. They are restrictive with their way and this is good and bad. As others have stated, with a good VPN like Mullvad or IVPN combined with a non invasive content blocker you have the same ad blocking capabilities as Adguard but with the added privacy of a VPN. This is your choice. There is no other.
A content blocker like Wipr works for 99% of all ads.
You can use this page to test any adblocker and VPN for their blocking ability:
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