How can you increase drop rate on aq worlds?

Answer 1

1. More luck

2. If you don't use skills while fighting a boss then the drop rate increases.

3. Not using skills does not increase the drop rate for quest items or other items.

Answer 2

There is currently no way to do so (Although for quests doing a member only quest can increase drop rates compared to a non member only quest for certain items iirc)

"Using necromancer will not nerf the drop rates. Not using skills will not increase the drop rates. Someone else in the room having the item will not increase or decrease the rate. None of the common myths you have heard will affect drop rates.  The drop rates are what they are." - Cemaros from AQW's Patch Notes (February 26, 2018)

There are no weapons, armors, capes, or consumables and other items that increase rare drop rates as well. HOWEVER, some items only drop when a certain requirement is fulfilled. This is generally done with quest items.

:) I hope this has answered your question.