@studentguy - I don’t know what the rules are in Europe, but I thought that the European equivalent of a scheduled airline (Part 121 in the US) under EASA rules required an ATP. What is an ATPL? (Airline Transport Pilot License?), so when you say an ATP isn’t required but an ATPL is, that is unclear to me.
I would be surprised if Europe allows an entry level first officer on a scheduled airline on jet or turboprop equipment to have only 300 hours. That is barely more that what is required for a commercial pilot certificate both in the US and Europe, and far short of the requirements for ATP.
Frankly, I would think twice about boarding an A320 or any other transport category airliner piloted by someone without an ATP (assuming that is true) and only 300-900 hours of experience.
If the airline that you propose to work for hires you and provides the flight training on their equipment to whatever the standards are required to be a first officer on that airline in your country, that is of course far preferable to your paying for it yourself. The interest free loan is nice but I still wouldn’t pay for it myself. Whether in Europe or the US, that training is so expensive that having to pay for it yourself should be a no-go from the beginning.
Medicine in the US is a sure path to money because the US lacks a national health system (unfortunately) whereas in Europe the reimbursements (and hence, salaries) of physicians is set by the particular nation’s national health insurance. Law (in the US, don’t know what it is like in Europe) is a gamble. Some do very well, but there are many who do not, particularly if they did not attend one of what are considered to be the “top 14” law schools in the US. In the US, there is a great overabundance of lawyers.
In the US (again, I don’t know the situation in Europe) engineering is the highest paid undergraduate degree at least to start and in midcareer after 10-15 years. The average starting salary for an engineer with a BS degree and no experience, just out of school, is about $67,000. That is significantly higher than an entry level pilot.
Engineering requires calculus, calculus based physics, chemistry, probability and statistics, and many other theoretical and applied science and engineering courses that all use high level mathematics. If you do not like those subjects, I would recommend something other than engineering.
Again, I am not familiar with the European system. Universities with flight programs or flying colleges in Europe may operate differently than in the US. Can you study something marketable outside of aviation in concert with your flight training? If you can, I would highly recommend that.