For those that prefer algo, there is an open issue to add Pi-Hole (https://github.com/trailofbits/algo/issues/1258) and in my fork I've added Pi-Hole support: https://github.com/dan-v/algo. It's a really nice setup especially on mobile devices where you typically have to choose between using a VPN or using adblock as they typically require a local VPN hack to function.