1. Install Tasmota Version 7 or above and homeassistant core-2021.4.0 or above.
2. Run the command TuyaMCU 12,8 (This will allow control over the Oscilation)
3. Run the command TuyaMCU 13,101 (This will allow control over the fan light)
4. Run the command

rule1 on TuyaReceived#Data=55AA00070005020400010012  do publish2 stat/lounge_fan/speed 1 endon on TuyaReceived#Data=55AA00070005020400010113 do publish2 stat/lounge_fan/speed 2 endon on TuyaReceived#Data=55AA00070005020400010214 do publish2 stat/lounge_fan/speed 3 endon on TuyaReceived#Data=55AA00070005020400010315 do publish2 stat/lounge_fan/speed 4 endon on TuyaReceived#Data=55AA00070005020400010416   do publish2 stat/lounge_fan/speed 5 endon on TuyaReceived#Data=55AA00070005020400010517   do publish2 stat/lounge_fan/speed 6 endon on TuyaReceived#Data=55AA00070005020400010618 do publish2 stat/lounge_fan/speed 7 endon on TuyaReceived#Data=55AA00070005020400010719  do publish2 stat/lounge_fan/speed 8 endon on TuyaReceived#Data=55AA00070005020400010719  do publish2 stat/lounge_fan/speed 9 endon on TuyaReceived#Data=55AA0007000502040001091B   do publish2 stat/lounge_fan/speed 10 endon on TuyaReceived#Data=55AA00070005020400010A1C do publish2 stat/lounge_fan/speed 11 endon on TuyaReceived#Data=55AA00070005020400010B1D  do publish2 stat/lounge_fan/speed 12 endon

Press enter than run this command Rule1 1

1. Add the following to Home Assistant to your FAN section:

  - platform: mqtt
    name: "Lounge Fan"
    state_topic: "stat/lounge_fan/POWER1"
    command_topic: "cmnd/lounge_fan/POWER1"
    oscillation_state_topic: "stat/lounge_fan/POWER2"
    oscillation_command_topic: "cmnd/lounge_fan/POWER2"
    percentage_state_topic: "stat/lounge_fan/speed"
    percentage_command_topic: "cmnd/lounge_fan/TuyaSend4"
    percentage_command_template: >-
      {% if value == 0 %}
       2,0
      {% elif value == 1 %}
       2,0
      {% elif value == 2 %}
       2,1
      {% elif value == 3 %}
       2,2
      {% elif value == 4 %}
       2,3
      {% elif value == 5 %}
       2,4
      {% elif value == 6 %}
       2,5
      {% elif value == 7 %}
       2,6
      {% elif value == 8 %}
       2,7
      {% elif value == 9 %}
       2,8
      {% elif  value == 10 %}
       2,9
      {% elif value == 11 %}
       2,10
      {% elif value == 12 %}
       2,11
      {% else %}
        'nul '{{ value }}''
      {% endif %} 
    qos: 0
    payload_on: "ON"
    payload_off: "OFF"
    payload_oscillation_on: 'ON'
    payload_oscillation_off: 'OFF'
    availability_topic: tele/lounge_fan/LWT
    payload_available: Online
    payload_not_available: Offline
    speed_range_min: 1
    speed_range_max: 12
    preset_mode_state_topic: "stat/lounge_fan/POWER3"
    preset_mode_command_topic: "cmnd/lounge_fan/POWER3"
    preset_modes:
      -  "ON"
      -  "OFF"

Please note if you want to change the topic name, you need to change it in the rule as well.