How do you record live shows/events? ?

Have you ever been on YouTube and saw clips of tv shows like Undisputed, First Take, Colin Cowherd etc. that have been recorded? I’m looking to learn how to do this. I really love those shows but I never get to catch them because I have work in the morning. I would like to record them so when I come home I can watch. I do not have cable or Hulu live, YouTube live etc. so I cannot DVR it. I do know sites where I can watch shows like this online for free but they are live viewing only, and like I said I’m at work during that time. Ideally I would like to learn or buy the tech needed to record those live streaming shows while I am at work so I can watch it when I get home. I am not tech savvy so please explain to me or what I need to buy like I’m an idiot.