Astrology is a vast subject, it is an ocean and no man can ever measure its depth.
Physics has been developing ever since Galileo and Newton first formalized it 4 centuries back. And yet, within 4 centuries only you have a subject vast enough that even the greatest physicists are not thorough with all its aspects. Those into quantum physics, often get out of touch of classical mechanics, and so on.
Now, think of a subject which is not centuries but millenniums old. The first written evidence of astrology dates back to 5500 BC as per current archaeological knowledge. Now, how can someone know it all in just a few years? The moment a man makes the claim of being accurate, know that he isn’t an astrologer. It is outright impossible to be 100% accurate. At best, 70% is what you can hope for. In fact, the strongly a person claims accuracy, the quickly the person gets proven wrong.
The most important factor is that astrology has been tampered with, to no end. Astrologers do not read from original scriptures, but books available in markets by any random author. There are branches of astrology that have been completely ignored. Just scroll quora and you would find people making weird claims. “Ketu in 12th house is excellent to have as it would give you moksha” is what I read today. Now, Ketu stays in the 12th house for 2hours each day. Which means 1/12th of the world’s population must be getting moksha any day now.
The thing that happens is that the horoscope is a complex chart. If you’ve ever seen a horoscope, it is only a box with 12 small boxes with 9 words and a few numbers. That is all! That is all your life, all the thoughts, all you’ve ever spoken or done.
It is from those 12 boxed and 9 words that your entire life is read. Each day, each hour, and each second! Now, just imagine the number of permutations and combinations that would form!!
Astrologers differ in opinion because they all have their rules. Memorized rule.
And yet, one rules cuts the other, a third rule cuts the second, a fourth cuts the third, and on and on. The more you know, the more factors you can comprehend at once, the more you can visualize, the more you are accurate. Otherwise, you end up being no different that other people.
It is not about one method, never about one method. It is about knowledge of all aspects as a whole. It is about wisdom. The more you know, the more you can tell, the less you know, the more you’ll be wrong.