Why do the best footballers have the nickname GOAT ?

If you’re not familiar with sports, the term may seem like a riddle to you, but rest assured, it doesn’t refer to an animal.
Those who use social media may have come across the term “GOAT” used in association with the world’s best sporting events. Roger Federer, Usain Bolt, Tom Brady and LeBron James are just a few of the names that have been dubbed GOAT. The likes of Lionel Messi and Cristiano Ronaldo regularly appear on similar lists of top athletes.

The term (Goat) has become widely used lately about soccer players, but what is its real meaning and the reason behind it?
There are many questions in soccer that sometimes pique our curiosity, and one of them is why some players are called “Gott”.
This term is often used by some fans for a group of players they consider to have high abilities and skills, so what exactly is a word?

So what does GOAT mean and who is GOAT?