Read this article on How to Choose a University before you make your decision about which country to go for 😔

The cost of studying in Brazil is around US$2000 to over US$10,000 annually

Ranks don't always depict how perfect a university is
Your choice depends on a lot of things - course, networking, opportunities, etc.
Plus, US offers a higher range of options to students
Whereas Singapore only has 4-6 well-known universities

There are a lot of factors involved-

Which university you get into Course curriculum If you'll get a practical learning experience Job opportunities

Use these points to make your decision

In the end, you can also apply to both countries, given that you like the uni you're applying to

You can check out these universities-
Harvard University
Stanford University
Johns Hopkins University
Massachusetts Institute of Technology
University of California, San Francisco
University of California, Los Angeles

6.5 overall and 6 in each individual band

Depends on a lot of factors-
Weather- Switzerland is colder
Language- The subject you choose might not be taught in English, but French (depends on the course and university you choose)
Cost- Switzerland is usually more expensive
And more

This is what you should do-

Request your DSO at your university to recommend the OPT.

Your DSO will then make a recommendation by endorsing your I-20 form.

You must also properly file Form I-765. It is in the Application for Employment Authorization with USCIS and you must pay the required fee and prepare supplemental documents.

When you are all done, mail your documents to USCIS.

Reach out to me in case you get stuck.

There are a few requirements-

Students may apply for CPT when they are currently an F-1 international student.

You must also have been enrolled full-time for at least one academic year prior to your suggested CPT start date.

Students must have a declared major and be enrolled full time in order to receive their preferred internship.

You are required to enroll in an internship or course that is designed for practical learning. CPT will require a letter of agreement from an employer.

Reach out to me if you have any more queries.

Yes, you can, Myra.

You can extend it by 24 months.

But there are a few eligibility criteria...you can read about them here.

Optional Practical Training (OPT) is given to F-1 international students that continue to maintain their status and if eligible they may apply for 12 months of OPT.
OPT provides hands-on work experience related to your chosen major.
You may also work under OPT after you have completed your program.

There are three types of Optional Practical Training (OPT): Pre-completion OPT, Post-completion OPT, and STEM OPT extension.

Curricular Practical Training includes either part-time and full-time training.
If you are approved for part-time CPT, you are allowed to work up to 20 hours or less within a week.
If approved for full-time CPT, you will be allowed to work more than 20 hours per week.

Hey Myra,

Curricular Practical Training (CPT) is temporary employment authorization for F-1 international students.
CPT allows students to train or receive an internship related to their major field of study.

Optional Practical Training (OPT) provides hands-on work experience related to your chosen major.
You may work under OPT after you have completed your program.

Also, adding to what Juhi said, you will have 3 months to get a job after graduation

I'd say Canada is much friendlier and wants to retain international talent
But it also depends...I mean the quality of education is also really good in the US
Depends on your preferences

You can also consider countries where the tuition fee is less but the ROI is good, like Canada or the Netherlands.