Traefik Url Redirect Without Change URL

Hi, we are using AWS Api Gateway for redirect a dummy address to our APIs.
For example, we have an address like abc.com and we have 5 path for this address like /customer, /product etc. we are getting response from different APIs for all paths but we are not changing abc.com/customer when we get answer from API. I am trying to do same thing on Traefik but I am new on Traefik. I searched everywhere but I didn't find a solution. I used middlewares but it is changing abc.com/customer to backend url. Someone help me for my case? Thanks...

version: "3.3"

services:

traefik:
image: "traefik:v2.11"
container_name: "traefik"
command:
#- "--log.level=DEBUG"
- "--api.insecure=true"
- "--providers.docker=true"
- "--providers.docker.exposedbydefault=false"
- "--entrypoints.web.address=:80"
ports:
- "80:80"
- "8080:8080"
volumes:
- "/var/run/docker.sock:/var/run/docker.sock:ro"

labels:
  - "traefik.enable=true"
  - "traefik.http.routers.whoami.rule=Host(`apitest.abc.com`)"
  - "traefik.http.routers.whoami.middlewares= redirection"
  - "traefik.http.middlewares.redirection.redirectregex.regex=^http?://apitest.abc.com/(.*)"
  - "traefik.http.middlewares.redirection.redirectregex.replacement=http://us-customer.abc.local/$${1}"

Can you give some structured examples of source request and target request (kind of Traefik input and output)?