This Responsive plugin will allow you to show Youtube & Vimeo Video in Lightbox Popup using shortcode

Video Popup plugin lets you create unlimited, responsive Video Lightbox and Popup for YouTube, Vimeo, MP4 & WebM on click or page load.

Create beautiful video lightbox popups with Gutenberg, shortcode, or Elementor. Supports YouTube and Vimeo videos using lightweight Magnific Popup.