Weighted Luck System Picking Top Item

For my weighted luck system I just loop through every collectable in my game and store it inside a table, then I sort the table keys because the item data is inside a hashmap and I don’t want to randomly go through the table as that would produce weird results. The issue is that when there is luck involved it’s going to pick the top item each time.

Example:
common = 100
uncommon = 1
rare = 1
total = 102
random = 60 --random number
luck = 2
number = random * luck (60 * 2) = 120
clamp number to total (120 clamps to 102)
102 is going to pick rare 100% of the time even though rare and uncommon are the same rarity and thats the issue im having.

local collectables = {}
			local totalChance = 0

			for itemName, itemData in next, Items do
				if not itemData.Collectable then continue end
				collectables[itemName] = itemData
				totalChance += itemData.SpawnChance
			end

			local sortedCollectables = {}
			for key, _ in next, collectables do
				table.insert(sortedCollectables, key)
			end

			table.sort(sortedCollectables, function(a, b)
				return collectables[a].SpawnChance > collectables[b].SpawnChance
			end)

			local luckMultiplier = 1 + collectableSpawn:GetAttribute("LuckMultiplier")
			local randomNumber = math.min(math.random(1, totalChance) * luckMultiplier, totalChance)
			local selectedCollectable = nil

			totalChance = 0
			for _, collectableName in next, sortedCollectables do
				local collectableData = collectables[collectableName]
				totalChance += collectableData.SpawnChance

				if totalChance >= randomNumber then
					selectedCollectable = collectableName
					break
				end
			end

how my item database is setup

["Bronze Ring"] = {
		["Type"] = "Trinket",
		["StackLimit"] = 99,
		["Sellable"] = true,
		["Collectable"] = true,
		["SpawnChance"] = 10000,
		["Worth"] = 2
	},

	["Bronze Goblet"] = {
		["Type"] = "Trinket",
		["StackLimit"] = 99,
		["Sellable"] = true,
		["Collectable"] = true,
		["SpawnChance"] = 9500,
		["Worth"] = 3
	},

if you know a way to midigate this please let me know!