At first, I studied English because it is the major language, all of the working world.

If I had higher scores ofn my English tests, I could get a good job that gave me morea better salary.

Also, II also practiced Chinese because I already knew some Chinese characters, and that's way I could start learning easily.

I liked Hong Kong movies, indeedmovies from Hong Kong, too.

SoAnd I sang the movie's OSTs again and again.

Lastly, I used to watch Japanese dramas after getting ofut of school.

Watching Japanese commerceials was one of my favorite routines forways to learning.

To tell the truth, when I was a college student, I studied three foreign languages at the same time.

Alt: "Simultaneously" instead of "same time" for brevity.

At first, I studied English because it is thea major language, all of the work. used in X settings.

Where X can be the words professional, school, personal... I wasn't sure what you meant by work.

If I had higher scores of English tests, I could get a good job that gave me morewith a higher salary.

Also, I practiced Chinese because I already knew some Chinese characters and t. That's way I could start learning easily.

So I sang the movie's OST again and again.

I would write original soundtrack (OST) in case your reader does not know what an OST is.

Watching Japanese commerces was one of my favorite routines for learning.

Perhaps you meant commercials?

At first, I studied English because it is thea major language, all of the work.

I wasn't sure what you meant by "all the work" so I took it out.

If I hadcould get higher scores ofn English tests, then I could get a good job that gave me morewith a higher salary.

Also, I practicstudied Chinese because I already knew some Chinese characters and that's wayso I could start learning it easily.

Watching Japanese commerceials was one of my favorite routines for learning.

In order to learn effectivemore efficiently, I am only studying English now.

However, someday, I will use these three languages fluently.