Astrology Degree Why Is It Said That Retrograde Planetary Transit Periods In Astrology Are Very Negative Times?

Why is it said that retrograde planetary transit periods in astrology are very negative times? - astrology degree

is that true?

If so, how?

and btw, no one can tell if a planet is a step backwards "and then direct the movement is not ... you stay in a sign ... 0 to 30 degrees. (in Astrology)

If so, have been characterized as the characters, or perhaps why, if this is true?

How and why is that?

Please explain.

Thank you for your answers!