While the "gold standard" paid banks (like Aviation Exam, Bristol, or BGS) are fantastic, a strategic use of combined with solid theory can get you a pass—and sometimes even a 90%+ score.
The Ultimate Guide to ATPL Free Question Banks: How to Pass Without Breaking the Bank atpl free question bank
But here is the good news:
Use the free forums. Do 300 questions on Meteorology. Every time you get one wrong, do not just read the answer. Open your textbook and read the chapter that question came from. Understand why the cumulonimbus cloud is dangerous, not just that the answer is "Hail." While the "gold standard" paid banks (like Aviation
However, treat free banks like a simulator session—great for practice, but not a substitute for real understanding. Your license will allow you to carry 200+ souls. Do not learn to fly on a budget of zero dollars. Every time you get one wrong, do not just read the answer
After two weeks, look at your stats. Are you failing all the Mass & Balance questions? That is a conceptual gap. Go back to the theory. Free banks are diagnostic tools, not teaching tools.