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Swinging in dungeons is much more profitable, but it requires a group of 5 people, with whom you will not get bored, passing the same dungeon over and over again. The advantage of this method is that, in addition to experience, you will receive items of equipment, far exceeding the rewards for tasks. If you can't level up yourself, use https://techmoran.com/2021/01/14/wow-carry/ to do so.