Help -- Getting variables from tables and communicating them into the game physically

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Hey not sure if this helps, but here’s how I make my Randomizers.

function(chances: {}, luck: number)
	
	local luck = luck or 1
	local chances = table.clone(chances)
	
	--Lets get total chance
	local totalChance: number = 0

	for _, chance in ipairs(chances) do
		totalChance += chance
	end

	--Lets apply luck
	for i, chance in ipairs(chances) do
		if chance / totalChance <= .1 then
			chances[i] *= luck
		end
	end

	--Lets scale chances into relative weights
	local n: number = 0
	local totalWeight: number = 0
	local options = {}
	local relativeWeights = {}

	--Lets get total weight and seperate options and relative weights
	for option, relativeWeight in ipairs(chances) do
		n += 1
		totalWeight += relativeWeight

		options[n] = option
		relativeWeights[n] = relativeWeight
	end

	--Time calculate relative weights
	for i = 1, n do
		relativeWeights[i] /= totalWeight
	end

	--Time to choose
	local choosenNum: number = randomizer:NextNumber()

	for i = 1, n do
		choosenNum -= relativeWeights[i]

		if choosenNum < 0 then
			return options[i]
		end
	end
end

function module.getRandomPet(player : Player, pets : {})
	--Time to format pets table, it will help us rarity such as same for example if we have two 35 rarity we make them one so it makes it equal 
	--since those both pets has same chances
	local chances = {}

	for i, pet in ipairs(pets) do
		chances[i] = pet.Rarity
	end

	--Luck
	local ownsLucky = MarketPlaceService:UserOwnsGamePassAsync(player.UserId,GameSettings.PassesId.Lucky) or player:WaitForChild("Passes"):FindFirstChild('Lucky') or player:WaitForChild("Boosts"):FindFirstChild('Lucky')
	local ownsSuperLucky = false

	local luck = 1.25 --starts with 25% luck

	if ownsLucky == true then --50% better luck
		luck += .5
	end

	if ownsSuperLucky == true then -- 100% better luck
		luck += 1
	end

	if player:GetAttribute('VIP') == true then -- 15% better luck for vip
		luck += .15
	end

	local roll = module.ChanceRoll(chances, luck)
	local choosenPet = pets[roll].PetId

	return choosenPet
end

How do I have the Pets Saved?

['Pets'] = {
			[1] = {PetId = 'Noob', Rarity = 50},
			[2] = {PetId = 'Fox', Rarity = 35},
			[3] = {PetId = 'Monkey', Rarity = 14},
			[4] = {PetId = 'Flamingo', Rarity = 0.99},
			[5] = {PetId = 'Parrot', Rarity = 0.01},
			[6] = {PetId = 'Dragon', Rarity = 0.001},
		}
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