Drop Rates In Runescape - Is It Just Me Or?

so many people say to me that they actually made a very good profit training slayer with all the good drops they'd get, I on the other hand will argue that I in fact lost money training slayer - from 93-99 slayer I was unlucky enough to get 4 whip drops/1 staff of light and maybe 10 d boots - it's why I hate slayer, i lost more on cannon balls/prayer pots than what I made in decent drops

I truly did have an extremely long and horrible dry spell