Your character looks pretty strong to me for lvl 8. Maybe you're going into dungeons that are too high level?
What I do in the 5-10 level range is repeatedly go into the early dungeons, especially Kleyou Tomb and Nayau Tomb. You kills lots of monsters for XP (if you don't have scrolls of wisdom, make sure to donate 500 gold at one of the shrines, to maximize your XP rate) and you also get lots of loot (some really valuable items, like the Orc Slicer sword) to sell for gold.
Every time I travel between Lannegar and Rhoneis, unless I'm in a hurry, I stop into Kleyou Tomb, for fun and profit as Adaon says! In New Garand, just keep running over to Nayau Tomb, kill monsters until your backpack is full, then return to New Garand. Repeat as often as you like. All the while enjoying the lovely graphics and game play! If you go without a companion, you will gain more XP, but you will have to fight more carefully. Hope this helps!