these are the steps required in my state of california. LLC California - How to Start an LLC in California | TRUiC
Also It’s around $800 a year in taxes. (Some states are way less. But still not cheap. And I have no Idea about other countries.)
So it’s worth it if you have made some money and have money to do so.
But it shouldn’t be a requirement, as it is not a cheap nor quick process. But it would be prudent to do so if you are making money and wish to grow.