That is true, I actually looked for an Idea (somehow I tried the most upvoted answer but for some reason, my counter didn't increased/decreased, idk why honestly lol)

But anyways, after trying, I looked for some answer and found the same problem but more complex (with other kind of braces) and it was cool, seeing the same problem but with a stack.

Indeed, but this solution would be easily extensible to one validating nesting of different types of brackets.

Allocating a stack increases space complexity more than necessary. A single int variable can be used for a more space efficient solution.

Using exception for validation is a poor practice.

Even though this is very succinct, it is not very readable.