No. Vivo Y83 does not have the particular LED flash for the front camera but it does have the display screen flash for the front camera.
Yes, Vivo Y83 does have the AI Face Beauty which detects gender, age, skin tone, skin texture and lighting environment and applies the necessary corrections on your selfies. You also have the option to in-active it.
Yes, Vivo Y83 does have the 2.5D Corning Gorilla Glass display.
There is no official announcement from the company if Vivo Y83 will support 5G network in future or not. But looking at the technical side of the phone specifications, we think that Vivo Y83 will support 5G network in future.