Load balancer configuration between 2 self service

I have a 2 stand alone servers, and I have installed self service on them (no full installation, Self-Service A, Self-Service B) and 1 password manager server.

(link for architecture click here)\

I Want that PC will go through a load balancer in order to reach the self-service servers, I open all firewall rules that I need, and still not working? Is it possible to do it?

also I configured in General Settings | Realm Instances | Self-Service site URL the load balancer URL.