Here are the general problems:
1. You haven't really answered the question.
2. There are grammar errors that will affect your writing at the university level (if that's your goal). Look up the word "syntax." Your work needs to be readable.
More specific issues include those enumerated below:
In many countries, euthanasia is the current focus of public debate.
Everyone knows this.
Some people object that this treatment is a way to lighten patients' pains and give them a peaceful death.
This is obvious too.
On the other hand
This is a cliche.
ray of hope
another cliche
In my view, I'm of the opinion that euthanasia should be permitted by laws for some reasons.
This sentence is at least ten words too long.
In the first place,
cliche
in some cases
cliche
several patients
"several"? Three or four?
valiances
I have graduate degrees in English and linguistics, yet I have never used this word. I'm not even sure I've seen it before. Put away the thesaurus.
They can't stand on any more the sore
Read this aloud and ask yourself whether it makes sense.
can't bear
cliche
the huge ants
You refer to "
the huge ants." To which "huge ants" do you refer?
To some extent
cliche
peaceful death
cliche
enforce the law
cliche
a way out
cliche