No one wants to die, but everyone will die. No one wants to die, but everyone will.

No one wants to die, but everyone will diedies someday. No one wants to die, but everyone dies someday.

While your sentence was grammatically correct, that phrasing makes it sound like they will die at a definite time period. Like in an action movie, the hero would say, "Everyone will die unless we stop the train from crashing!" or something like that.

They just don't know when it will happen/they will die. They just don't know when it will happen/they will die.

They just don't know when they will die. They just don't know when.

While your sentence was grammatically correct, we usually don't use the same word 3 times in a row (die). You can omit it here as the third instance because we understand from context what you're talking about.

When I was a kid, I was carefree, and just playing arouned with the other children in my village. When I was a kid, I was carefree, and just played with the other children in my village.

When I started my own family, I enjoyed becoming a husband and looked forward to dtarting à family/having a child. When I started my own family, I enjoyed becoming a husband and looked forward to dtarting à family/having a child.

It wasn’t because of anything special—it just came to me naturally. It wasn’t because of anything special—it just came to me naturally.

Be careful using the em dash "—" in online spaces. Some native speakers will assume you are copy-pasting responses from AI. Honestly this sentence does indeed look very AI to me... ^_^;

Maybe there is a timer for lifen internal clock that went off inside my bodyof me. Maybe there is an internal clock that went off inside of me.

This one is hard to correct. I know what you're trying to say but I'm also struggling to think of a more natural sounding way to say it.

At first, whenever I thought about death, I felt scared, but g. Gradually, I had to accept it. At first, whenever I thought about death, I felt scared. Gradually, I had to accept it.

This sentence is on the edge of a run-on sentence (too many commas trying to connect too many fragments together). The usual remedy for a run-on sentence is to break it into 2 or more sentences.

Life is like a plant; i. It has its own life cycle,; like wheat, corn, soybeans… Life is like a plant. It has its own life cycle; like wheat, corn, soybeans…

Weird analogy: wheat, corn, and soybeans are not part of the same life cycle, they each have their own life cycle. Describing the parts of a single plant's life cycle probably would have fit better, like seed to sapling to tree.

As we age, we lose the confidence tostop fighting against deaththe knowledge that we will die someday. As we age, we stop fighting against the knowledge that we will die someday.

This phrasing is a little bit off, so I'm making a guess on intention here. In English, we usually talk about acceptance or coming to terms with the fact that we will die someday versus fighting against it.

Live each day happy-go-luckyas if it were your last. Live each day as if it were your last.

Your sentence isn't technically wrong, and happy-go-lucky is indeed a correct English idiom, but your phrasing mirrored a common English phrase which I have placed here, and which sounds much more natural in this context.

Who careknows when it will comes? Who knows when it will come?

"cares" doesn't feel like the right fit to me, because presumably your friends and family will care a lot when you pass.