M.S

From which university have you completed your B.Tech?

To pursue MS from abroad, you have to appear for TOFEL and GRE exam.

GRE is not required if not mentioned by the university. It is mainly required in US. If you have good academic performance, you need not take GRE even if you are applying to a top university in Australia.

I don't think exams like GRE, etc. is required unless the university really requires one. Applicants with outstanding academic track record are taken. International applicants must provide IELTS or TOEFL scores, German language knowledge is also preferred. Always check with the universities prior to applying.

MS or M.Arch is for design course.

Can you state your question in English as I had difficulty in understanding your question ?

Yes absolutely. You need to work on your SOP, LORs and get some work experience in your field of interest.

You can go to Canada in order to pursue CSE, but you will face few problems because you have to start from level one as you are not a CSE student, so you don't have knowledge about that field. You should continue with your core branch and you can do better with this option.