Is There a Correlation Between Retention and Exclusions?

When i excluded customers, c p a increasedshiton. Now it's 30 % retention and 70% nor. But if i'm constantly testing new creatives with without exclusions, maybe i don't nt do i feel i maybe that wouldn't really matter. And then i guess the social rproof on the reatives would also help toon. I men, i'm actually in the same boat a thatthat is something i want to deploy, and i think there's ways that we can measure it. Thats something i love about attribution soft were with trible and north men,. Is the ability to see the new customer percentage down to things like, like percentage of traffic ray