1) The first thing you need to do is choose the video you wanna use and the context its gonna make on your webpage.
2) Then click on the share botton at the bottom of the video and copy the link.
3) Then go to "savefrom.net" and you will paste the link of your video here.
4) Then click the "Download" botton to download the video to your device.
5) Then go to neocities and star your code.
6) You will upload to "neocities" your video and name it as you wish.
7)This is the code for embedding a video, where you will declare the downloaded video.
8)You will code your webpage as you like and use the video code as you wish.