Autoplay background video not working

Hi there everyone, so I’ve been getting problems with adding an autoplay background video onto my site. I’m aware that this occurs on safari and on low power mode; however not having autoplay is resulting in a play button on the screen. is there any custom code I can add to fix this???

link to preview of the site:

https://preview.webflow.com/preview/the-lab-ac46a7?utm_medium=preview_link&utm_source=designer&utm_content=the-lab-ac46a7&preview=5ebdbdb32e3085746ffbb8f73605dfc5&pageId=62fe7d8e6aaa3b6910cb4db5&workflow=preview