Cost & living - Part-time work Questions

Are there good job openings and part-time opportunities in major cities in New Zealand?

What is the initial amount I should have in my account for UK visa, and can I pay tuition fees by working part-time after arrival?

Are there part-time job opportunities in Ireland and Canada, and how competitive are they?

Can I get a part-time job quickly in Luxembourg during my studies?

As a student working part-time and repaying loan, will I face any issues in UK?

Is the job, course, and travel schedule manageable while studying abroad in Germany?

Do all the countries I mentioned have part-time job opportunities for students in Ireland/USA?

Is part-time work allowed during studies in countries like Italy and Germany, and what are the work hour limits?