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Lightbox open Video Button HELP PLEASE

Hello,
my Problem is as follows: I want to open a video in a lightbox by clicking on a button. In this Picture I show you my testimonial design, an there should be a button below the Text which open the Video in a lightbox on my homepage. I m really new to Webflow and I have no Idea how to do this, can anyone help me with a solution?

Project Link: https://preview.webflow.com/preview/digiorbit-main-project?utm_medium=preview_link&utm_source=designer&utm_content=digiorbit-main-project&preview=8eecb5ddb8b95cf1b69f57aae5224ca4&pageId=5f1b67ca148c6d1de38baeab&mode=preview

Here is my public share link: LINK
(how to access public share link)