Need some help with Touch to show 2nd page (GC9A01)

Hi,
I’m lost /don’t understand the way / options / possibilty to make my display, show a second screen. (I also start to doubt if this is even possible with my display)

I would like to “touch” the screen (GC9A01) and then it will show the 2nd page. Touch it again and it will show 1st page (or after time-out).

Do I need to configure: Touchscreen? If so, how / platform? or are there other / better ways?
I googled a lot, but none seems to fit the questions I have.

thx in advance

This is my current code (and it shows a nice CO2 gauge and value):

# GC9A01 round Display 240x240
# initial version: 16022025

color:
  - id: COLOR_RED
    red_int: 255
    green_int: 0
    blue_int: 0
  - id: COLOR_GREEN
    red_int: 0
    green_int: 255
    blue_int: 0
  - id: COLOR_YELLOW
    red_int: 255
    green_int: 255
    blue_int: 0
  - id: COLOR_ORANGE
    red_int: 255
    green_int: 160
    blue_int: 0

font:
  - file: "fonts/arial.ttf"
    id: font_small
    size: 18
  - file: "fonts/arial.ttf"
    id: font_large
    size: 36
  - file: "fonts/Roboto-Medium.ttf"
    id: roboto_large
    size: 32 # Increased from 24 to 48
  - file: "fonts/Roboto-Medium.ttf"
    id: roboto_medium
    size: 56 # Increased from 24 to 48
    extras:
      - file: "fonts/materialdesignicons-webfont.ttf"
        glyphs: [
            "\U000F07E4", # mdi-molecule-co2
            "\U000F0F55", # mdi-home-thermometer-outline
          ]
  - file: "fonts/Roboto-Medium.ttf"
    id: roboto_small
    size: 20 # Increased from 12 to 20
  - file: "fonts/ds-digi.ttf"
    id: font_digital
    size: 72 # Increased from 12 to 20

# # SPI-bus voor het GC9A01-display
spi:
  clk_pin: 5
  mosi_pin: 3

#touchscreens:
 # - platform: ??
  #  display: my_display
  #  on_touch:
   #   then:

display:
  - platform: ili9xxx
    model: GC9A01A
    id: my_display
    dimensions:
      height: 240
      width: 240
    cs_pin: 7
    dc_pin: 9
    reset_pin: 11
    invert_colors: true
    rotation: 0
    auto_clear_enabled: false
    update_interval: never
    data_rate: 40MHz

lvgl:
  log_level: INFO
  color_depth: 16
  bg_color: 0x000000
  align: center
  pages:
    - id: main_page

      widgets:
        - meter:
            height: 240
            width: 240
            align: center
            text_font: montserrat_14
            bg_opa: TRANSP
            text_color: 0x999999
            border_width: 0
            pad_all: 4

            scales:
              - ticks:
                  width: 2
                  count: 21
                  length: 15
                  color: 0x000000
                  major:
                    stride: 5
                    width: 6
                    length: 20
                    color: 0xFFFFFF
                    label_gap: 20
                range_from: 300
                range_to: 2300
                angle_range: 270
                rotation: 135

                indicators:
                  - line:
                      id: co2_needle
                      width: 8
                      color: 0xFF0000
                      r_mod: -5
                  - arc: # GREEN
                      color: 0x00FF00
                      width: 12
                      start_value: 300
                      end_value: 800
                  - arc: #YELLOW
                      color: 0xFFDE21
                      width: 12
                      start_value: 800
                      end_value: 1299
                  - arc: # ORANGE
                      color: 0xFF7518
                      width: 12
                      start_value: 1300
                      end_value: 1799
                  - arc: #RED
                      color: 0xF44336
                      width: 12
                      start_value: 1800
                      end_value: 2300

        - obj:
            # to cover the middle part of meter indicator line
            height: 118
            width: 118
            radius: 73
            align: CENTER
            border_width: 0
            bg_color: 0x000000
            pad_all: 0

        - label:
            id: co2_text
            text_font: roboto_medium
            align: center
            text_color: 0x999999
            bg_opa: TRANSP
            y: -35
            recolor: true
            text: "\U000F07E4"
        - label:
            id: co2value
            text_font: font_digital
            align: center
            text_color: 0xFFFFFF
            bg_opa: TRANSP
            y: +12
            text: "---"
        - label:
            id: ppm_text
            text_font: montserrat_24
            align: center
            text_color: 0x999999
            bg_opa: TRANSP
            y: +90
            text: "PPM"

    - id: temp_page
      widgets:
        - obj:
            align: TOP_MID
            styles: header_footer
            widgets:
              - label:
                  text: "A second page"
                  align: CENTER
                  text_align: CENTER
                  text_color: 0xFFFFFF
        - label:
            id: temperature
            text_font: font_digital
            align: center
            text_color: 0xFFFFFF
            bg_opa: TRANSP
            y: +90
            text: "---°C"