Part ofAbout me

Well, to introduce thprovide context, I traveled arround the world in BAP Union (that ship is a sailingboat of the Peruvian Navy). I am cadet 3a third degree cadet and this travel is important for my country because it is the my country's first travelip around the world for my country.

I joined the Navy oin 2021 after Covid and I continue today.

Well to introduce theFor context I traveled arround the world in BAP Union t. That ship is a sailing boat of the Peruvian Navy. I am cadet 3a 3rd degree cadet and this travelip is important for my country because is thet is my country’s first travelip around the world for my country.

Technically “well to introduce the context” might be right, but “for context” is both shorter and more common.
I’m not entirely sure what a 3rd degree cadet or cadet 3 degree is since I have no expertise in this area, but you would definitely need an “a” in front of it.
“Travel” is used more commonly as a verb, so when referring to it as a noun a word like “trip” would be a better choice. However, sometimes you might also hear “travels” as a plural noun.
You would need an “it” at the end to act kind of like the subject for the clause in the sentence (“because” introduced a new clause).
“Because it is the first trip around the world for my country” would be right, but since you already said “for my country” at the end of the last sentence, changing the order around a little to say “my country’s first trip” would make it a little less repetitive.

I joined the Navy oin 2021 after Covid and I continue to work in it today.

In terms of time, “in” is used in most contexts. For example, with weeks you could say “in these few weeks”, however when referring to one specific week, you would typically drop any of those additional words to say something like “this week”, “last week” or “next week”. You would also use “in” with months (“in (month name)”, like “in January”, with years (“in 2021”), or even groupings of years like decades or centuries (“in the 21st century”). With periods of time shorter than a week (the weekend or a specific day), you would use “on”, as in “on the weekend”, “on Monday” or even a specific date like “On May 31, 2024”.

To summarise “on” vs “in”:
On - for very limited and specific dates/days (“on the weekend”, “on Monday”, “on May 31, 2024”)
In - for most time periods, especially longer ones (“in 2021”, “in January”, “in the 21st century”)

For “I continue today”, you need to specify what you are continuing to do today. A more common wording would be “I still work in it” or “I’m still in it”, with today becoming slightly more optional since “still” implies that you have continued doing it up until this moment in time, and possibly into the future.

Now I am studying English because it is a requirentement to graduate.

Expanding on the idea of clauses from one of the previous comments, “because” separates the sentence into two sections, or in technical terms, clauses. Clauses must always contain a subject (I, you, he, she, it, we, they, etc.) and a verb. So looking at “it is a requirement to graduate”, the subject is “it” and the verb is “is”.

Well tTo introduce thsome context, I traveled arround the world in the BAP Union that ship, which is a sailingboat ofin the Peruvian Navy. I am cadet 3a 3rd degree cadet and this travel iip was important for my country because is thet was our navy's first travelip around the world for my country.

Try to separate ideas into sentences.

I joined the Navy oin 2021, after Covid, and I continueam still in it today.

Usually "on" would be for a specific date, like "on March 14, 2021".

Now I am studying English because it is a requirentement to graduate.