Bandwidth monitor from unifi controller

Configuration
4

I got this working by enabling SNMP and adding these sensors. internet_in_mbps and internet_out_mbps you can put in lovelace

- platform: snmp
  name: "USG WAN in"
  host: 192.168.1.1
  baseoid: 1.3.6.1.2.1.31.1.1.1.6.2
  community: "public"
  version: "2c"
  scan_interval: 10

- platform: snmp
  name: "USG WAN out"
  host: 192.168.1.1
  baseoid: 1.3.6.1.2.1.31.1.1.1.10.2
  community: "public"
  version: "2c"
  scan_interval: 10

- platform: statistics
  name: "USG WAN in Stats"
  entity_id: sensor.usg_wan_in
  sampling_size: 4
  max_age:
    hours: 24

- platform: statistics
  name: "USG WAN out Stats"
  entity_id: sensor.usg_wan_out
  sampling_size: 4
  max_age:
    hours: 24

- platform: template
  sensors:
    internet_in_mbps:
      value_template: "{{ (state_attr('sensor.usg_wan_in_stats','change_rate')|float*8*(state_attr('sensor.usg_wan_in_stats', 'sampling_size')-1)/1000000)|round(2) }}"
      unit_of_measurement: "MBps"
      entity_id: sensor.usg_wan_in_stats
    internet_out_mbps:
      value_template: "{{ (state_attr('sensor.usg_wan_out_stats','change_rate')|float*8*(state_attr('sensor.usg_wan_out_stats', 'sampling_size')-1)/1000000)|round(2) }}"
      unit_of_measurement: "MBps"
      entity_id: sensor.usg_wan_out_stats