Recommended and mentioned products
Pi-hole is a multi-platform, network-wide ad blocker.
Mid 2000s were the first time I encountered malware with ads. We still hear stories about them sometimes. IDK why anyone runs without ublock origin at this point. Also, pi-hole for apps (tablet/phone/etc.).
This hasn't been added to SaaSHub yet
The best ad blocker for Android. Free and open source.
This was going to recommend Blokada as well. But don't download it from Play Store. Google doesn't allow VPN-based adblockers in the Play Store and Blokada 6 is a cloud-based subscription app. Download Blokada 5 from here: https://blokada.org/. If you have a Samsung phone, Blokada 5 is in the Galaxy Store. It's also available in F-Droid if you're using that app store as well.