Canada

Its better to opt for state universities in Canada, they have a better reputation and also their degrees are valid and accepted globally. You can look for like University of Alberta,
University of British Columbia, York University etc. All the best.

This is the list of top colleges of Canada:
1) Humber College
2) Sheridan College
3) Centennial College
4) Fanshawe College
5) Seneca College
6) George Brown College
7) Conestoga College
8) Langara College
Find the course you desire in these colleges, you will do better in future.
You need 6.5 bands overall with not less than 6 in any module in IELTS. Since you scored 6, it is a matter of concern.

Canada is a great place for engineers and it also provides PR, so don't worry. You will get fruitful result after the successfully completion of MS in electrical engineering.
All the best.

52% is quite low, visa chances are also less. You can try applying but chances are extremely minimal unless you have an extraordinary profile. You can check Australia.

52% is quite low, visa chances are also less. You can try applying but chances are extremely minimal unless you have an extraordinary profile. You can check Australia.

As per better education in mechanical engineering, Germany is the best, but as per PR, Canada is the best place for everyone.

You should opt for Germany as education cost is cheaper in Germany as compared to Canada. You have more job opportunities there particular for mechanical engineering. You need to learn the German language for that. Though Canada is good for Masters but it's more costly as compared to Germany. Canada is preferred for CSE.

Actually, there is no age limit to pursue Masters degree. You just need college admission letter and adequate money to study there and always try to show your keen interest in study that will ease you to get the student VISA.

If it is mentioned in their terms & condition then you have to send the transcript, but you can contact the admission office and say you also wants to send your predicted score.

You can choose any country for Master's. Canada offers integrated P.hD also in ECS. Look for the following universities:
1. McGill University
2. University of Toronto
3. University of British Columbia
4. University of Alberta
5. McMaster University