Awesome solution xD

This Kata doesn't make sense. We don't want to learn how to code to make predetermined things, but to take care of unpredictable ones. Don't lose your time with this Kata, really, you won't learn much to put in practice in real life.

The idea to use RegEx for this is broke my mind. If someone know how it possible, please tell me (seriously :)

There is three things that need your attention in this Kata. 1) You get a string 2) If you split this string, you also get strings but in array 3) JavaScript is a loosely typed and dynamic language but it has methods for pointing type of data (it is helpful with compare).
You can find tones of good information about JS in MDN Web Docs

Since all the number are separated by a single space, it should be easy to convert the string into an array/list, or you can just go through it char by char and make the array/list manually.

I don't use JavaScript very often (and if I do I always wash my hands afterwards), so I don't know the exact options you have available or what other things you will have to do to the list afterwards. The easiest is likely just to google something like "JavaScript convert string to array" or something.

I also don't want to spoile too much. Learning to google for answers and ideas is important nowadays.

How can someone call a easier and with different focus a "duplicate kata"?! Not everyone knows how to make a whole code about converting multiples temperatures at the same time --' Stop thinking about only yourselves and consider the newbies that is trying programming and trying this platform as well.

Thank you for the tip! I really need to do some easy Katas 😅

Javascript. Since it asks to analyze a string, I thought that would be the solution, since I can't think of any other way to solve it right now. I'm still pretty new at programming, that's why.

I agree. That's how you learn best and fastest. Carrying out the (more or less) same task over and over until you can do it without thinking. They call it muscle memory, if I'm not mistaken.
There are plenty of those, though. Check out the filters to the left of your screen and actively search for Kata's that are marked 'Easiest' or 'Most completed', and start with those. You will quickly get the hang of it.

As far as I know, no one has ever used RegEx in this kata challenge. I don't really see why anyone would.

Any specific reason you ask?
Which programming language are you using?

Does this challenge need Regular Expressions or I can solve it without it? What is the expected way of doing it if both are possible?

my code is better

So simply don't do it, duh. Leave it to the elementary students.

There are people out there that needs easy stuff like this.

The same is true for Javascript.