Is hell a man made concept based on a mistranslation?

So basically my faith has been disminishing because of this: i recently seen videos and read articles where people state that the concept hell isnt even in the bible and is actually a gross mistranslation, hell is a man made concept that theologians have held to induce fear into people, how do you guys respond to this?

Here is an example of an article:

https://www.paulmclellan.com/blog/2019/4/9/hell-as-a-lake-of-fire-for-eternal-punishment-does-not-exist-in-the-bible