If YouTube Premium is available in your location, you can download videos to your computer or mobile device by becoming a YouTube Premium member. If you're a YouTube Premium member, learn how to manage your download settings.
Source : https://support.google.com/youtube/answer/7381437?hl=en
If you can't open a file, it could be because: You don't have permission. You're signed in to a Google Account that doesn't have access. The correct app isn't installed on your Android device.
Source : https://support.google.com/docs/answer/14743550?hl=en&co=GENIE.Platform%3DAndroid
Browse and open files and folders Open the Files app on your iPhone. Tap Browse at the bottom of the screen, then tap an item on the Browse screen. If you don't see the Browse screen, tap Browse again. To view recently opened files, tap Recents at the bottom of the screen.
Source : https://support.apple.com/guide/iphone/search-for-files-and-folders-iphe4bff8827/ios
To make certain file types open on your computer instead of Chrome downloading them, you have to download the file type once, then right after that download, look at the status bar at the bottom of the browser. Click the arrow next to that file and choose always open files of this type".Feb 10
Source : https://forums.ivanti.com/s/article/Streamed-Documents-Being-Saved-Or-Downloaded-In-Browser-Instead-Of-Opening?
To find the My Files folder, search using the app search or in the default Samsung folder on your apps screen. My Files sorts your files into categories, such as Images, Videos, Audio and Downloads. If you have recently downloaded a file and are trying to locate it, tap Downloads" to access or delete the file."
Source : https://www.samsung.com/uk/support/mobile-devices/how-to-use-my-files/
not-given
Source : https://www.youtube.com/watch?v=gMYvCEFmZvM