bookmarklet.js

javascript:(()=>{let e=0;const o=()=>{let o=Math.random()<=.25?"driver":"spectator",l=document.querySelectorAll(".cameras-column button:first-child"),t=document.querySelectorAll(".cameras-column button:last-child");console.log(e,o),"spectator"===o?l[e]?.click():t[e]?.click(),e++,e>=l.length&&(e=0)};document.querySelector('[overlay="controlPanel.overlays.ingameOverlay"] button:not(.visible)')?.click(),document.querySelector('[overlay="controlPanel.overlays.sessionInfo"] button:not(.visible)')?.click(),document.querySelector('[value="manufacturerLogo"]')?.click(),document.querySelector('[value="gapToLeader"]')?.click(),document.querySelector('[overlay="controlPanel.overlays.standingsTicker"] button:not(.visible)')?.click(),document.querySelector('[ng-model="controlPanel.overlays.driverInfo.settings.showCarData"].ng-empty')?.click(),document.querySelector('[value="driverAndDescription"]')?.click(),document.querySelector('[overlay="controlPanel.overlays.driverInfo"] button:not(.visible)')?.click(),o(),setInterval(o,6e4)})();

change-camera.js

(() => {
  const enableCorrectSettings = () => {
    // Enable ingame overlay if not already
    document
      .querySelector(
        '[overlay="controlPanel.overlays.ingameOverlay"] button:not(.visible)'
      )
      ?.click();

    // Enable timing overlay if not already
    document
      .querySelector(
        '[overlay="controlPanel.overlays.sessionInfo"] button:not(.visible)'
      )
      ?.click();

    // Enable Manufactor logo
    document.querySelector('[value="manufacturerLogo"]')?.click();

    // Enable gap to leader
    document.querySelector('[value="gapToLeader"]')?.click();

    // Enable standings ticker
    document
      .querySelector(
        '[overlay="controlPanel.overlays.standingsTicker"] button:not(.visible)'
      )
      ?.click();

    // Enable car data
    document
      .querySelector(
        '[ng-model="controlPanel.overlays.driverInfo.settings.showCarData"].ng-empty'
      )
      ?.click();

    // Enable driver description
    document.querySelector('[value="driverAndDescription"]')?.click();

    // Enable driver overlay
    document
      .querySelector(
        '[overlay="controlPanel.overlays.driverInfo"] button:not(.visible)'
      )
      ?.click();
  };

  // Start swapping cameras around
  let currentCameraPlace = 0;
  const swapCameras = () => {
    let cameraChoice = Math.random() <= 0.25 ? 'driver' : 'spectator';
    let spectatorButtons = document.querySelectorAll(
      '.cameras-column button:first-child'
    );
    let onboardButtons = document.querySelectorAll(
      '.cameras-column button:last-child'
    );

    console.log(currentCameraPlace, cameraChoice);

    if (cameraChoice === 'spectator') {
      spectatorButtons[currentCameraPlace]?.click();
    } else {
      onboardButtons[currentCameraPlace]?.click();
    }
    currentCameraPlace++;
    if (currentCameraPlace >= spectatorButtons.length) {
      currentCameraPlace = 0;
    }
  };

  // Enable correct settings and start swapping cameras
  enableCorrectSettings();
  swapCameras();
  setInterval(swapCameras, 1000 * 60);
})();

gistfile1.txt

Right click bookmark bar => Bookmark Manager => Copy paste bookmarket.js as URL 

https://try.terser.org/ for minifying