I wonder how can google Ads bots let this webpage being promoted. Another breach in security, bot algorithm, human mistake?
Google are not your friend. They are not there to protect you. They do the bare minimum due diligence on the ads they run and the apps they accept in the app store. All Google cares about is farming your data and making money. If a scammer is willing to pay them, they will happily take their money.
YouTube activity.
Disabling things like your Google search history or your YouTube activity, or turning up things like your Facebook privacy settings, does next to nothing to protect your privacy. These companies are still monitoring everything you do and collecting all your information, the only difference being now you or your friends/contacts can't see your history. They still can, and they are still selling it to third parties.
uBlock sounds interesting and yes it's always prudent to use a trustworthy ad blocker. Although in some cases the Ad Blocker itself could have malware so there's that to be taken into account too.
That's why you should use an open source ad blocker such as uBlock Origin, which I linked above. It is the only ad blocker you will ever need. Note that "uBlock" is a different program to "uBlock Origin". "uBlock" has commercial interests and should be avoided.
DuckDuckGo is a decent browser but I guess it'll take a while for it to reach the same level of functionality as the more mainstream one. The Brave browser is pretty good though.
DDG browser is for mobile only. Brave browser is also filled with trackers and ref links and accepts money to show you ads, so helps on neither the "privacy" nor the "avoiding potential scams via ads" fronts.