Please refer to these

K3S docs:

• https://geek-cookbook.funkypenguin.co.nz/kubernetes/loadbalancer/k3s/
• https://docs.k3s.io/networking/networking-services#service-load-balancer

Follow the 2nd link for setting up Klipper LB/ Service LB on K3s.

If you need more info on how to proceed further, please share these details

1. Is it on AWS, Azure, BareMetal, VM etc to determine external LB feasibility.
2. How many Nodes, to determine whether we should use Klipper or not.
3. Can you perform a curl request from somewhere (preferably local) to your node IP: Port.