JavaScript append

const getvid = document.querySelectorAll('.testimonials .info-box-icon');
const index = getvid[0];
const video = `<video style="width:369px;" controls>
  <source src=http://7daychallenge.imperfectlybeautiful.me/wp-content/uploads/2022/06/video-reviews.mp4" type="video/mp4">
</video>`;

var vb = index.innerHTML = video;