Children today have more things than those ofey did in past generations.

This sounds better to me, especially as we are talking about children in general rather than a specific group.

DeIn spite of that, they do not look happy.

“Despite” is in my experience generally paired with a more specific noun.

I think that is partly because adults around them have a strong influence on casetheir ideas of who they should be.

In those daysBack then, children were happy because they were not concerned with the adult's society.

The last sentence was referring to the present, so “those days” is unclear.

These days, children look depressed because they are expprotected, prot by their parents, subjected byto their parentexpectations, and forced to lead a life that their parents decidchoose.

“Decide” typically occurs in the context of “decide on” something.

Me pPersonally, as a young person at the age of 18, I am happy to gdo the waywhat my parents have suggested.

Last year, I was wondering whether or not I should try to get a same job that my parents have, and I decided to do.

“Whether” by itself is accepted by many native speakers but should ideally be followed either by an alternative or by “or not.”

I think it was me who took the opportunity and made a choice.

Or “it was I,” to be grammatically strict.

Though I am not sure now thatif I will regret this decision, I am sure that I will not blame my parents for what is happening now and what will happen in the future.

“That” is optional but sounds better to me because the idea that follows is relatively complex.

I think that is partly because adults around them have a strong influence on cases oftheir thoughts about who they should be.

Two ways I might reword this sentence. First, if you are talking about parent's influencing the kid's thoughts about their choices then as I corrected. Second, if you mean just the parents influences and not how kids think about the parent's expectations: "I think that is partly because adults around them have a strong influence on who they become."

In those dayse past, children were happy because they were not concerned with the adult's society.

These days, children look depressed because they are expected, protectcoddled by their parents, and forced to lead a life that their parents decide.

I think "coddled" fits the negative connotation you are going for more than "protected". In the sentence as I corrected it you could use "expected to" instead of "forced to".

The reason I took out "because they are expected" since this is implied by the parents forcing them to do something. To keep it in I would probably rewrite something like: "These days, children look depressed because expectations are piled on them, they are coddled by their parents, and they are forced to lead a life that their parents decide."

Me personally, as a young at the age of 18As a young 18-year-old, I am happy to go the wayfollow my parents' suggestedion.

"Me personally" is redundant since you are using the subject "I" the reader knows it is about this "I" personally. Also "as a young at the age of 18" can be "as a young 18 year old" to be more concise, or even shorter at "As an 18-year-old". "Young" is not really needed because most people assume that someone is young after you say they are 18.

Last year, I was wondering whether I should try to get apursue the same job that my parents have, and I decided to do so.

Though I am not sure now thatif I will regret this decision, I am sure I will not blame my parents for what is happening now and what will happen in the future.

I think that is partly because adults around them have a strong influence on cases of who they should become.

In those dayse past, children were happyier because they were not concerned with the adult's’ society.

These days, children look depressed because they are expected,have many expectations, are protected by their parents, and forced to lead a life that their parents decide.

Me personally, as a young person at the age of 18, I am happy to go the wayfollow the path that my parents suggested.

Last year, I was wondering whether I should try to get athe same job that my parents have, and I decided to do so.

Though I am not sure now that I will regret this decision, I am sure I will not blame my parents for what is happening now and what will happen in the future.