I found the test to actually be easier. One thing I found pretty useful is the exam structure which tells you how many questions come from each section. I used the book below and found it to be extremely helpful. Overall if you’ve been in QA for some time and can pass the practice test consistently, you’ll do great.
https://www.amazon.com/Study-Guide-ISTQB%C2%AE-Foundation-Syllabus-ebook/dp/B07FKGGSHK