ok, so i didn't spend much time on it, but here's what i got for the introduction: ( please correct any grammatical or any other mistakes )

An only child has it all! No problems, no worries. It has always been that way; they just never seem to have any trouble with life. This is the same with almost every child around the world who doesn’t have any siblings. Although there are some down sides to being an only child, I believe the bright sides are more. There are many reasons why life is easier for an only child. An only child has many advantages not available to a child with siblings.

The only correction I'd make is to delete this -- "It has always been that way; they just never seem to have any trouble with life."

I doubt if that's a factual statement.

The rest looks good.

ok, thanks

Great start to the introduction! Here's my suggested revision to improve grammar and flow:

"Being an only child comes with its perks - no problems, no worries. Throughout history, only children have often had a significantly easier life compared to those with siblings. While there may be some downsides to being an only child, I firmly believe that the benefits outweigh them. In this essay, I will explore the numerous advantages that an only child enjoys, which are typically unavailable to those with siblings."