Unable to run UniFi Controller on FWG

Hello,

I've found a topic created over 2yrs ago but acutally issues described over there weren't simillar to mine.

https://help.firewalla.com/hc/en-us/community/posts/360051987813-Trying-to-install-Unifi-Controller

I'm trying to run my first docker on FWG and i'm not a pro IT person.

Please confirmt did i understand that correctly:

1. A network as your docker network, we will use 172.16.1.0/24 in this tutorial.
2. A static IP for your unifi controller instance, we will use 172.16.1.2 in this tutorial.

Point 1 is network where i will put my Unifi APs - it is named as LAN and under Network Menager (in APP) it exists as 192.168.88.1/24 - as i understand nevertheless it has 1 on the end i should use 192.168.88.0/24 as docker network

Point 2 is static ip of ... ? FireWalla Gold box ? same as this where i am going thru ssh ? so it will be 192.168.88.1

So now... I successfully done  Step 1 point 1 and 2 of guild (where i changed proper ip addresses) like this:

version: "3"

services:
  unifi:
    container_name: unifi
    image: jacobalberty/unifi:latest
    volumes:
      - '/data/unifi/:/unifi'
    restart: unless-stopped
    networks:
      default:
        # static IP address for unifi controller
        ipv4_address: 192.168.88.1
networks:
  default:
    driver: bridge
    ipam:
     config:
       # your chosen docker network here
       - subnet: 192.168.88.0/24

then point 3 with no errors.

Step 2 gave me errors, whenever i try to execute commands:

sudo ip route add 192.168.88.0/24 dev br-$(sudo docker network ls | awk '$2 == "unifi_default" {print $1}') table lan_routable

or

sudo ip route add 192.168.88.0/24 dev br-$(sudo docker network ls | awk '$2 == "unifi_default" {print $1}') table wan_routable

Im getting same info:

RTNETLINK answers: File exists

Then step 4 with corrected FWG ip address with no errors... Besides unify controller is not reachable under unify 8080, 8443 or 192.168.88.1 with those ports...

When im trying to check status i get:

 docker-compose@unifi.service - unifi service with docker compose
   Active: activating (auto-restart) (Result: exit-code) since Fri 2022-10-28 13:12:10 CEST; 3s ago
  Process: 1139 ExecStopPost=/bin/rm -rf $TMPDIR (code=exited, status=0/SUCCESS)
  Process: 25335 ExecStop=/usr/local/bin/docker-compose down -v (code=exited, status=0/SUCCESS)
  Process: 984 ExecStart=/bin/bash -c /usr/local/bin/docker-compose pull; /usr/local/bin/docker-compose up (code=exited, status=1/FAILURE)
  Process: 312 ExecStartPre=/usr/local/bin/docker-compose rm -fv (code=exited, status=0/SUCCESS)
  Process: 311 ExecStartPre=/bin/mkdir -p $TMPDIR (code=exited, status=0/SUCCESS)
 Main PID: 984 (code=exited, status=1/FAILURE)

May someone lead me with it, becouse of i moved to Ubiquiti APs now i want to have control over it... As far as i understand buying Cloud Key or UDM is not nesessary while i got FWG.