How can I make infinite chunk generation

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So I’m using this code to make Perlin noise and generate block terrain but Idk how to make it generate and ungenerate as the player traverses the terrain how can I achieve this?

this is my code

--//Locals

local X = 64 --How big the terrain can be on the X value

local Z = 64 --How big the terrain can be on the Z value

local grid = {}

--//Main

for x = 1, X do --//2D array will tell the grid how to place the blocks on the axis.
    grid[x] = {}

    for z = 1, Z do
	    grid[x][z] = math.noise(x/10, z/10) * 10 --randomness of the block placing.
    end
end

for x = 1, X do --Use the 2d array and turn them into parts and put them in the workspace.
    for z = 1, Z do
	    local yPos = grid[x][z]
	
	    local part = Instance.new("Part")
	    local spawnPart = Instance.new("SpawnLocation")
	    spawnPart.Parent = game.ReplicatedStorage
	    part.Anchored = true
	
	    if yPos < -9 then --Sets the sand texture
		    part.Material = Enum.Material.Sand
		    part.BrickColor = BrickColor.new("Cool yellow")
		    part.Name = "SandPart"
		    part.Parent = workspace.blockTerrain.Sand
	    elseif yPos < 0 then --Sets the variety dark grass texture
		    part.Material = Enum.Material.Grass
	    	    part.BrickColor = BrickColor.new("Dark green")
	    	    part.Name = "DarkGrassPart"
	    	    part.Parent = workspace.blockTerrain.Grass.DarkGrass
	    else --Sets the variety green grass texture
		    part.Material = Enum.Material.Grass
		    part.BrickColor = BrickColor.new("Camo")
		    part.Name = "GreenGrassPart"
		    part.Parent = workspace.blockTerrain.Grass.GreenGrass
	    end
	
	    part.Position = Vector3.new(x*5, yPos, z*5)
	    part.Size = Vector3.new(5, 30, 5)
	
    end
end

local water = Instance.new("Part") --Adds water to the terrain
water.Anchored = true
water.Size = Vector3.new(X*5, 30, Z*5)
water.Position = Vector3.new(((X+1)*5)/2, -11,  ((Z+1)*5)/2)
water.CanCollide = false
water.Transparency = .5
water.TopSurface = Enum.SurfaceType.SmoothNoOutlines
water.LeftSurface = Enum.SurfaceType.SmoothNoOutlines
water.RightSurface = Enum.SurfaceType.SmoothNoOutlines
water.BackSurface = Enum.SurfaceType.SmoothNoOutlines
water.FrontSurface = Enum.SurfaceType.SmoothNoOutlines
water.BottomSurface = Enum.SurfaceType.SmoothNoOutlines
water.BrickColor = BrickColor.new("Pastel Blue")
water.Parent = workspace.blockTerrain.Water
water.Name = "WaterPart"
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