How to scale Active MQ message broker in Kubernetes

I have a Kubernetes cluster with 2 applications and an Active MQ message broker, is it possible to scale the brokers to make my application faster. I tried scaling it with a StatefulSet however it just spawned 2 different brokers that are operating on their own.

This is my deployment file for Active MQ:

 apiVersion: apps/v1
kind: Deployment
metadata:
  name: active-mq
  labels:
    app: active-mq
  namespace: active-mq
spec:
  replicas: 1
  selector:
    matchLabels:
      app: active-mq
  template:
    metadata:
      labels:
        app: active-mq
    spec:
      containers:
        - image: <IP REDACTED>:5000/active-mq
          name: active-mq
          resources:
            requests:
              memory: 500Mi
              cpu: 200m
            limits:
              memory: 1000Mi
              cpu: 400m
      imagePullSecrets:
        - name: reg-key
      restartPolicy: Always

This is my Dockerfile for Active MQ:

FROM openjdk:8-jre-alpine
WORKDIR /home/alpine
RUN apk update && apk add wget
RUN wget https://www.apache.org/dist/activemq/5.16.3/apache-activemq-5.16.3-bin.tar.gz -O - | tar -xz
EXPOSE 8161 61616 5672 61613 1833
CMD ["/bin/sh","apache-activemq-5.16.3/bin/activemq", "console"]

I was following this tutorial to create my deployment, and changed some properties. Deploying Active-MQ in a Kubernetes cluster