Who aAm I ?

I think you can get away with capitalizing every word in your title here because it's so short. Also, make sure there aren't any spaces between your words and any punctuation marks you add.

Hello, ladies and gentlemen , f. First of all, my name is Mohamed (an Islamic name ) ¶
); you can easily pronounce it Muh-HAM-uhd.

Be sure to split up run-on sentences, like what you originally had, into complete separate ones whenever you can. You could even go further by replacing the semicolon I added with a period and capitalizing "You."

I have reached theturned eighteen's years old .

To "turn" a certain age is a more common expression in English.

aAlso, I'm a computer science student esspeciallyizing in Red Teaming (Cyber Ssecurity Track) ¶
t. That's alleverything about me .

Search up industry-specific words in a search bar and see what comes up. Those results should show you how to space out those terms.

I'm just want to write every day using hard worlds and to learn . . . to be really good at English andso I can easily landed a job easy in the future.

These were just a couple of grammatical corrections.

Hello ladies and gentlemen , f. First of all, my name is Mohamed. (Islamic name ) ¶
you can easily)¶
It's pronounce itd Muh-HAM-uhd.

"you can easily pronounce it Muh-HAM-uhd." is a sentence I could see working in some settings, but it sounds kind of snarky in an introduction.

I have reached theam eighteen's years old .

I'm also I'm a computer science student esspeciallyizing in RedTeaming. (Cyber Security Track) ¶
t¶
That's all about me .

I think you meant specializing vs especially. Specializing = having a specific focus in.

I'm just want to write everyday using hard worlds and, learn .. .to be really good at English, and landed a job an easy job in the future.

"..." can be used show a pause in a sentence, but this isn't the sort of sentence for it as written. In this case the sentence works better with the changes I made.

Who am I ?

Hello, ladies and gentlemen , first of all m! My name is Mohamed (an Islamic name ) ¶
y).¶
You can easily pronounce it Mas "muh-HAM-uhd".

I have reached the eighteen'snow turned 18 years old .

I'm also I'm a computer science student, esspecially in RedTeaming (Cyber Security Track) ¶
t.¶
That's allit about me .

I'm just want to write every day using harddifficult worlds and learn .. .how to be really good at English andso that I can easily landed a job easy in the future.