Universities in the United Kingdom are among the most prestigious, providing aspirational value to students who wish to study abroad. At the same time, tuition fees and the overall cost of living in the UK can be a barrier for many students, prompting them to look elsewhere.
The best strategy to prepare for the IELTS exam is to introduce oneself to as many resources written and spoken by native English speakers as you can. Watch English-language film and TV, and study magazines, newspaper, and literature. Your ability to communicate with English in a range of registers and conditions will be tested on the exam, so the more context-specific your comprehension of English, the better. As much as you can, practise speaking, even if it's just to yourself in front of a mirror.