他人の不幸を祝うとはひどいヤツだの英語

He has met with a series of misfortunes―met with a chapter of accidents.

wishing evil to others

Misery loves company.

Happiness depends, not so much on circumstances, as on one's way of thinking.

It is not decent to laugh at another's troubles.

My misfortune has turned out a blessing.

Every cloud has a silver lining.

One's misfortune turns out a blessing.

an absence of concern for the welfare of others

“Every cloud has a silver lining.”【イディオム・格言的】

a companion in [of] one's misfortune

A misfortune never comes alone.

Misfortunes always come in threes.

having or bringing misfortune

Misfortune pursued the family.

fellowship in misfortune

take the bitter with the sweet

“Every cloud has a silver lining.”【イディオム・格言的】

hold a person culpable

a series of misfortunes

Misfortunes seldom come singly.

Misfortune never come single.

You can never be happy if you feel envious of other people.

to bear up under misfortune―hold up under afflictions―have fortitude under misfortune

take the bitter with the sweet

That's one consolation.

I don't think I could go as far as to destroy peoples' happiness in order to become happy.

Even if only one's self were to become happy, it would mean nothing.

wish ill or allow unwillingly

Troubles never come singly.