There're so many people that we can't get off the train smoothly, yet some people never fail to strongly push us from the back as if they're telling us to get off quickly.

Some other people hit us with their bags and some other people clear their throats noisy,ily and repeatedly to make the others move aside.

When I get off a train, I say loud,ly: "Excuse me! I'm getting off!", t. Then many people try to move aside to pass me through.

When I say "Tthank you" passing by, many people quickly clear themselves onff my way.

When I ignored what grandma said, as a child, she said to me,: "Is your mouth an ornament? Go to a hospital right now and have your mouth and voweltongue gotten rid of by a doctor. Give them to children who havweren't had theirborn with mouths and vowels since they were borntongues." I feel sometimes I'm glad I had a strict grandma.

I suppose you meant tongue instead of vowel?

I think many of Japanese people tend to take bad behaviors no without saying anything.

I read today that it'll be difficult to speak if you doidn't speak at all for a long time, because the voweltongue shrinks.

As you get older, more clearly it'll stand out more clearly.

What I hate on aabout packed trains

Can't explain why, this just sounds better to me.

What I hate on aThe worst thing about packed trains is when I getgetting off.

another way of rephrasing the sentence that sounds a little better to me

There' are so many people that weus passengers can't get off the train smoothly, yet some people never fail to strongly push us from the backbehind as if they're telingl us to get off quickly.

I've never seen a native use "There're" even in informal text. "There're" is how we slur it in speech, but we never write it - in my experience. Adding "us" in front of "passengers" makes it more natural to say "we" and "us" later on.

Some other people hit us with their bags and some other peopleothers clear their throats noisy,ily and repeatedly to make the otherspeople move aside.

Sounds more natural without the repetition.

When I get off a train, I say loudly say, "Excuse me! I'm getting off!", t Then many people try to move aside to let me pass me through.

Sounds better without the "many".

WThen I say "Thank you" while passing, and many people quickly clear themselvesout onf my way.

"to clear out" isn't reflexive

WhenAs a child, whenever I ignored what my grandma said as a child, she said, she would say to me, "Is your mouth an ornament? Go to a hospital right now and have your mouth and vowel got rid ofs removed by a doctor. Give them to children who haven't had their mouths and vowels since they were born." I feel sSometimes I'm glad I had a strict grandma.

"tell someone something" or "say something to someone". If you don't want to say "my", you should capitalize "grandma". By "vowel" do you possibly mean tongue or voice box?

I think many of Japanese people tend to takolerate bad behaviors no without saying anything.

These people are just cowards who cawon't speak outay what they want to say.

Just a point on word choice. "Can't" implies that they do not posses the ability to speak out. "Won't" implies that they have the ability to say it, but will not say it because they are afraid, etc. So, I feel using "won't" pushes the point you made about them being cowards a little more.

I read today it'll becomes difficult to speak if you don't speak at all for a long time, because the vowel shrinks.

As you get older, more clearly it'll stand ouit'll become more apparent.

What I hHate on a pPacked tTrain

Titles are capitalized.

There' are so many people that weyou can't get off the train smoothly, yet some people never fail to strongly push us from the back as if they tell us topush people in front of them, as if to say get off quickly.

"There are" is often contracted to "there're" in speech, but not in writing.

Some other people hit uothers with their bags, and some other people repeatedly clear their throats noisy, repeatedily to make the others move aside.

I get really get disgusted justwhen I seeing these people.

Or: I get really disgusted when I see this kind of behavior.

When I get off a train, I say loudly, "Excuse me! I'm getting off!", t Then many people try to move aside to let me pass me through.

When I say "Thank you" as I passing, many people quickly clear themselves on my waystep aside.

When I ignored what my grandma saidtold me as a child, she saidwould ask me, "Is your mouth an ornament? Go to athe hospital right now and have your mouth and vowel got rid ofremoved by a doctor. Give them to children who haven't had their mouths and vowels since they were born." I feel sometimes I'mfeel glad I had such a strict grandma.

I'm not sure what you mean by vowel. Also, I'm not sure what it means to give mouths to children who haven't had mouths since they were born. Perhaps this is an expression that doesn't translate to English.

I think many of Japanese people tend to takeput up with bad behaviors and not saying anything.

These people are just cowardsPeople who can't speak outup and say what they want to sayare just cowards.

I read today it'll be difficult to speakthat if you don't speak at all for a long time, it becomes difficult to speak because the vowel shrinks.

Again, I'm not sure what you mean by vowel.

As you get older, more clearly it'llit stands out more clearly.