How can i disable my running script while im crouching in game?

here at

UIS.InputBegan:Connect(function(input,gameprocessed)
    if speed2 > topspeed then return end
    if gameprocessed then return end
    if not cancrawl then return end
    if input.KeyCode == Enum.KeyCode.C then
        if not IsCrawling then
            IsCrawling = true
            cancrawl = false

            CrouchDownAnimation:Play()
            wait(0.25)
            CrouchDownAnimation:Stop()
            CrouchingAnimation:Play()
            CrouchingAnimation:AdjustSpeed(0)
                    Humanoid.WalkSpeed = 5
                    game.StarterPlayer.CharacterJumpPower = 0
        end
    end
end)

you can add ScriptYouwantToDisable.Disabled = true another solution that might be better is to just combine the script like this

local Char = game.Players.LocalPlayer.Character or game.Players.LocalPlayer.CharacterAdded:Wait()
local Humanoid = Char:WaitForChild("Humanoid")
local UIS = game:GetService('UserInputService')
local IsCrawling = false
local CrouchDownAnimation = Humanoid:LoadAnimation(game.ReplicatedStorage.ClientAnimations:WaitForChild("CrouchDown"))
local CrouchingAnimation = Humanoid:LoadAnimation(game.ReplicatedStorage.ClientAnimations:WaitForChild("Crouching"))
local CrouchUpAnimation = Humanoid:LoadAnimation(game.ReplicatedStorage.ClientAnimations:WaitForChild("CrouchUp"))
local cancrawl = false

local topspeed = 12

Humanoid.Running:Connect(function(speed2)
    if speed2 > topspeed then 
        cancrawl = false
    elseif speed2 < topspeed then
        cancrawl = true


        Humanoid:GetPropertyChangedSignal("FloorMaterial"):Connect(function()
            if Humanoid.FloorMaterial == Enum.Material.Air then
                cancrawl = false
            elseif Humanoid.FloorMaterial ~= Enum.Material.Air then
                cancrawl = true

            end
        end)

        Humanoid.Running:Connect(function(speed)
            if speed > 0 then
                CrouchingAnimation:AdjustSpeed(1)
            else
                CrouchingAnimation:AdjustSpeed(0)
            end
        end)
        UIS.InputBegan:Connect(function(input,gameprocessed)
            if speed2 > topspeed then return end
            if gameprocessed then return end
            if input.KeyCode == Enum.KeyCode.C then
                if not IsCrawling then
                    IsCrawling = true
                    cancrawl = false
                    print("Crawl")
                    CrouchDownAnimation:Play()
                    wait(0.25)
                    CrouchDownAnimation:Stop()
                    CrouchingAnimation:Play()
                    CrouchingAnimation:AdjustSpeed(0)
                    Humanoid.WalkSpeed = 5
                    game.StarterPlayer.CharacterJumpPower = 0
                end
            elseif input.KeyCode == Enum.KeyCode.LeftShift and not IsCrawling then
                print("running")
                Humanoid.WalkSpeed = 25 --change "25" to your speed you want
            end
        end)
        UIS.InputEnded:Connect(function(input)
            if input.KeyCode == Enum.KeyCode.C then
                if IsCrawling then
                    IsCrawling = false
                    cancrawl = true
                    print("not Crawl")
                    CrouchingAnimation:Stop()
                    CrouchUpAnimation:Play()
                    wait(0.25)
                    CrouchUpAnimation:Stop()
                    Humanoid.WalkSpeed = 16
                    game.StarterPlayer.CharacterJumpPower = 0
                end
            elseif input.KeyCode == Enum.KeyCode.LeftShift and not IsCrawling then -- can only run if its not IsCrawling
                print("Not running")
                Humanoid.WalkSpeed = 16 --change "16" to your speed you want when you stop running
            end
        end)

    end
end)