>>1550728yt-dlp can download a video without logging in.
It's the program that all youtube downloading apps are built around. But you can use it standalone.
To install: download the executables
>yt-dlp.exe>deno.exeAnd put them in a folder. Then open a command prompt in that folder and run
>yt-dlp YOUR_YOUTUBE_URLThis will download the video. You can play it using any media player.
Make sure you update yt-dlp regularly, by running
>yt-dlp -Ubecause YouTube changes its protection every few days and the devs change the program accordingly.
There are also media players that have yt-dlp integrated. I haven't researched it.