To expand on what you wrote, the challenge with phages is that they’re highly specific to certain bacteria, in the same way that some viruses target gorillas and some target humans. We have yet to find broad spectrum phages. While humans have been saved from bacteria by phages, it requires identifying the bacteria strain, looking up appropriate phage that can target that bacteria, cultivating a dose of the phage, etc. So, yea, phages are highly effective, but there are practical challenges. As you say, antibiotics are lazy.