Pronouns

Hi Nourdan,
I don't know if your message is intended for me, but I will reply anyway!
My first advice to you is that you always use formal English - even when posting on forums, sending emails and text messages - and especially when writing letters, such as job applications. That way you will be practising your English and improving your skills and (just as importantly), avoiding reinforcing (or grooving), your faults.
One small disadvantage of this approach is that your English may sometimes seem a little stilted or  'wooden', especially when you are corresponding with friends. The big advantage, however, is that people will understand you!
You wrote...
I hope if you can give me more examples;in order to undrestand mors
You might re-write your sentence like this...
I hope that you can give me more examples, in order that I might understand more.
A better way would be like this...
Please, could you give me more examples, so that I might better understand English grammar.
-OR-
I hope that you will give more examples, so that I might better understand you.
 
I hope that this helps a little.
Best wishes,
Milliepig

Hi Attia,

You might rewrite your greeting in these ways...

Hi, I am Attia and I come from Algeria. It is nice to meet you all.

Hi, I'm Attia. I come from Algeria. It is nice to meet you all.

Hi, my name is Attia. I live in Algeria. It is nice to meet you all.

Names (called proper nouns), always start with a capital letter, as with the A in Attia and the A in Algeria.
I is always written as a capital letter - never as i.

I'm is a short way of writing I am. the a is dropped and replaced by an apostrophe ('), demoting that one or more letters are missing.

Sentences always end with a full stop.

Best wishes,

M