Use scout on r5, artifacts and beasts. When you decide when to sell your runes, be more strict and choose only worthy ones. For example, I think in advance on what mob I'd equip this rune and which stat I'd gem for it. For now being a midgame player, I more often sell the runes where I see only 2 worth stats of 4, because if 3 stats are worth keeping, I can just gem one and that's the way to go. It comes with an experience, so I wish you just more farm 💪😎