When developing the Forge system, I drew heavy inspiration from Metin 2, a well-known MMORPG that was hugely popular in our region. I spent a good chunk of my childhood playing it. It has the same item destruction mechanic, and no matter how much you curse at it, hitting +9 on an item genuinely feels amazing. That's why I don't want to remove the burning mechanic entirely. There's a protective item that drops from enemies in the later dungeons that prevents destruction.
That said, if progression feels too punishing, I can increase item drop rates. Currently, they have a 20% chance to drop if you don't have the item, and 10% with it. So statistically, if your item burns, killing five of the enemy that drops it should net you one.
Which dungeon are you on, and are you struggling to progress? Depending on where you are, I can adjust the drop rates accordingly. Also worth noting is the mini-game where you align the marker during enhancement can push your success chance to 100%, so at the very least, getting to +6 should always be viable. There's also a separate item that boosts your enhancement success rate, which also drops from enemies rarely.