If you got the Murena website, you can buy Fairphone 3 and 4s with /e/ preinstalled. I bought my FP3s from there back before they switched their name to Murena.
As someone who has been using /e/ for about 3 years now, I can tell you that de-googled Android works, and is an option. If you don’t like the idea of desktop class software and convergence it is a good option.
The Librem 5 is better because it is running a desktop class operating system. Full stop.