How to implement video file?

Hi everyone, I am new to cPanel and hope this is the right section for my inquiry. I am using Wordpress for my webpage and embedded a YouTube video on it. Problem is, the quality of the video file is mad low when I open my site so I was wondering if it's possible to upload the footage (mp4) to my cPanel webspace server and embed the video from there. I know how to upload files already but how do I use them on the actual webpage? Thanks in advance!