What is the eligibility and country-wise possibility for my profile with backlogs in UK/Australia for a Bachelor's/Master's?

It depends on the country and university, but with a four-year Bachelor's, CGPA 8.3, and 15 cleared backlogs, you have options for a Master's abroad - though some destinations are more flexible than others.

- UK: Many universities accept up to 15 cleared backlogs, especially if your overall record is strong. Top universities may be stricter.
- Germany: Most public universities are strict (prefer 0 - 3 backlogs). Private universities may be more flexible, but options are limited.
- Canada: Some accept up to 5 backlogs; others are stricter. Your CGPA and overall profile matter.
- Australia: Generally flexible - some universities accept up to 15 backlogs with a strong academic record.
- USA: Most prefer no backlogs, but some may consider up to 5 - 8 if the rest of your profile is strong.

A strong statement of purpose and meeting English language requirements are important. For the best options, focus on universities known for holistic admissions.