[SOLVED] Can't run .jar file for Forge!

[Chasmless]

So, I have been trying to install forge, but there's a problem. So when I downloaded the .jar file, (note: I am on mac) and opened it, it said something about some jdk or something and it was required. I couldn't get a screenshot, but I downloaded the jdk. Then after I ran it, this happened:

https://imgur.com/a/IsvPBCC
 

So, then I tried to execute in terminal using: 

 

java -jar forge-1.14.4-28.0.45-universal.jar

and this is what I got, (my name is censored):

https://imgur.com/a/gfhxJJJ

To make it a little easier, the error I got was: "no main manifest atrribute"

A google search revealed it had something to deal with the manifest file of it or something like that. I even tried this on minecraft 1.12.2 forge jar, it yielded the same results. NOTE: ALL FILES WERE DOWNLOADED FROM THE OFFICIAL FORGE WEBSITE.

Edited August 12, 2019 by Chasmless

[DaemonUmbra]

Can you provide the URL you got Forge from instead of "THE OFFICIAL FORGE WEBSITE", many have made their site look like the official in order to get you to download their BS and I've seen many people come here after being hoodwinked by these sites.