clickWhilePresent.js

function clickWhilePresent() {
  let found = false;
  for (let btn of document.getElementsByTagName('button')) {
    if (btn.innerText == 'View More') {
      btn.click();
      setTimeout(clickWhilePresent, 500);
      found = true;
      break;
    }
  }
  if (!found) {
    alert('Done!');
  }
}
clickWhilePresent();