What am I doing wrong? :(

I've heard a lot of people say/write that the fastest way to max def on a character is through using a wizard to farm. I have a wizard with which I farm. It has a t9 staff t4 spell t10 robe and t3 def ring. I can mow down gods pretty quickly, but even after an hour of farming, all I get are like a def pot or 2 and 2-4 speed pots. What am i doing wrong thats preventing me from maxing out my def?

godlands pot drop rates are decent, not very high though.
just go farm abysses with the lava wall hack, if you are a clean player, well, just keep farming.

By this I assume you mean non client using / hacking?
If so then the opposite would mean you are referring to a client / hack user as a "dirty", player.
Ergo labeling the vast majority of this websites users and staff as "dirty" people.
Finally I would like to state that I am offended by your statement ser, and resent being called such a thing.
Furthermore I would like to apologize as member of this site to its staff @Hux I hope you don't let this base slander get to you <3.

It's all about luck unfortunately

Just farm sprites and sell the dex pots (or drink them) for def (3:1). It's really easy with a wizzy because you can stand outside his range.

Your not doing anything wrong but ever since the lower drops in Glands, Dungeon farming is much easier. Join a fairly good guild that can run abysses, Kill your wizzy(keep it equips). Now play knight and get decent equips from your wizzys equipment. Ask guildies to help you do abyss then you will get loads of vitality and def pots! Hope this helped have a fun time