Sometimes a man gets lost in the loudy world where a manhe cannot hear his own wordthoughts. Sometimes a man gets lost in the loud world where he cannot hear his own thoughts.

Sometimes manone gets lost in the loudy world where a man cannot hear his own words. Sometimes one gets lost in the loud world where a man cannot hear his own words.

The pronoun "one" is weird for a lot of non-Anglophones. It refers to an unspecified individual.

Sometimes maen get lost in the loudy world where a manone cannot hear his own wordtheir own thoughts. Sometimes men get lost in the loud world where one cannot hear their own thoughts.

Better yet " we could get lost in a loud world where it's difficult to keep track of one's thoughts"

he realizes how much alone he is when he walks into the crowd. he realizes how alone he is when he walks into the crowd.

hHe realizes how much alone he is when he walk ins through the crowd. He realizes how alone he is when he walks through the crowd.

"Through" makes more sense in this context. Walking is a verb of movement. Walking "in" the crowd would technically mean that he's walking inside of the crowd. Technically correct, but "through" works better. That, or "into"

heYou realize how much alone you are when heyou walk in thea crowd. You realize how alone you are when you walk in a crowd.

sSmiles are fake, words are superficial for this man. Smiles are fake, words are superficial for this man.

The first word of a sentence is always capitalized. Also, this is a very poetic sentence. I like it.

smiles are fake, words are superficial forin this man.world smiles are fake, words are superficial in this world

I know this is written in a reflective mood so I may be missing your meaning

sSometimes Sometimes

Capitalized 'cause 'tis a title

In thatese times a man only wants silence,. silence which tells nothing but, explains everything. In these times a man only wants silence. silence which tells nothing but, explains everything.

that, gives the context it happened in the past

In thate times the man only wants silence, silence which tells nothing, but explains everything. In the times the man only wants silence, silence which tells nothing, but explains everything.

In thatDuring these times man, you only want silence, silence which tellsays nothing but explains everything. During these times, you only want silence, silence which says nothing but explains everything.

Because some emotions are cannot be contain to theed in words, some pains are only echoes in the heart. Because some emotions cannot be contained in words, some pains are only echoes in the heart.

Because some emotions are cannot be contain to theed in a word, some pains are only echoes in the heart. Because some emotions cannot be contained in a word, some pains are only echoes in the heart.

"Be contained" is the correct usage of the passive voice, which I think you were going for here.

Because sSome emotions are cannot contain to the worbe explained, some pains are only echoes in the heart. Some emotions cannot be explained, some pains are only echoes in the heart.