How could i make the script not detect keys in chat?

i have a script i made that moves you like speed with cframe with making the wasd keys move you with cframe but the problem is when i type in chat it also moves you how could I make this not happen? another issue is the part that goes under the player moves down slowly how could u make this not move at all?

local User = game:GetService("UserInputService")
local player = game:GetService("Players").LocalPlayer
local GuiService = game:GetService("StarterGui")
local mouse = game.Players.LocalPlayer:GetMouse()

local holdingWKey = false
local holdingSKey = false
local holdingAKey = false
local holdingDKey = false
local holdingSpaceKey = false
local holdingShiftKey = false

local startup = false

Speed_1 = -1
Speed_2 = 1

mouse.KeyDown:connect(function(key)
    if key == "-" then
        Speed_1 = Speed_1 + -0.2
        GuiService:SetCore("SendNotification", {Title = "Speed", Text = "Speed has gone up";})
    end
 end)

mouse.KeyDown:connect(function(key)
    if key == "=" then
        Speed_2 = Speed_2 + 0.2
        GuiService:SetCore("SendNotification", {Title = "Speed", Text = "Speed has gone up";}) 
    end
 end)

 mouse.KeyDown:connect(function(key)
    if key == "[" then
        Speed_1 = Speed_1 + 0.2
        GuiService:SetCore("SendNotification", {Title = "Speed", Text = "Speed has gone down";})
    end
 end)

 mouse.KeyDown:connect(function(key)
    if key == "]" then
        Speed_2 = Speed_2 - 0.2
        GuiService:SetCore("SendNotification", {Title = "Speed", Text = "Speed has gone down";})
    end
 end)










-- player.Character.HumanoidRootPart.Anchored = true


mouse.KeyDown:connect(function(key)
    if key == "h" then
        if startup  == true then
            startup = false
            GuiService:SetCore("SendNotification", {Title = "Speed", Text = "Speed is now disabled";})


        else
            startup = true
            GuiService:SetCore("SendNotification", {Title = "Speed", Text = "Speed is now enabled";})

            local brick = Instance.new("Part", workspace)
            brick.Size = Vector3.new(7, 2, 3)
            brick.CFrame = game:GetService("Players").LocalPlayer.Character.HumanoidRootPart.CFrame + Vector3.new(0, -4, 0)
            brick.Transparency = 1
            brick.Anchored = true
            brick.Name = "Brick"

            mouse.KeyDown:connect(function(key)
                if key == "h" then
                    brick:remove()
                end
            end)


            for i = 1, math.huge do
                brick.CFrame = game:GetService("Players").LocalPlayer.Character.HumanoidRootPart.CFrame + Vector3.new(0, -4, 0)
                wait(0)
            end
        end
    end
end)





game:GetService('RunService').Stepped:connect(function()
    if startup then
        if WHeld == true then
          game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame * CFrame.new(0,0,Speed_1)
        end
    end
end)

game:GetService('RunService').Stepped:connect(function()
    if startup then
        if SHeld == true then
            game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame * CFrame.new(0,0,Speed_2)
        end
    end
end)

game:GetService('RunService').Stepped:connect(function()
    if startup then
        if AHeld == true then
            game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame * CFrame.new(Speed_1,0,0)
        end
    end
end)


game:GetService('RunService').Stepped:connect(function()
    if startup then
        if DHeld == true then
            game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame * CFrame.new(Speed_2,0,0)
        end
    end
end)


game:GetService('RunService').Stepped:connect(function()
    if startup then
        if SpaceHeld == true then
            game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame * CFrame.new(0,Speed_2,0)
        end
    end
end)

game:GetService('RunService').Stepped:connect(function()
    if startup then
        if ShiftHeld == true then
            game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame = game.Players.LocalPlayer.Character.HumanoidRootPart.CFrame * CFrame.new(0,Speed_1,0)
        end
    end

end)                    


User.InputBegan:Connect(function(inputObject) 
    if(inputObject.KeyCode==Enum.KeyCode.W) then
        holdingWKey = true WHeld = true
    end

    if(inputObject.KeyCode==Enum.KeyCode.S) then
        holdingSKey = true SHeld = true
    end

    if(inputObject.KeyCode==Enum.KeyCode.A) then
        holdingAKey = true AHeld = true
    end

    if(inputObject.KeyCode==Enum.KeyCode.D) then
        holdingDKey = true DHeld = true
    end
    if(inputObject.KeyCode==Enum.KeyCode.LeftShift) then
        holdingShiftKey = true ShiftHeld = true
    end

    if(inputObject.KeyCode==Enum.KeyCode.Space) then
        holdingSpaceKey = true SpaceHeld= true
    end

    if(inputObject.KeyCode==Enum.KeyCode.W) then
        holdingUKey = true WHeld = true
    end
end)

User.InputEnded:Connect(function(inputObject)
    if(inputObject.KeyCode==Enum.KeyCode.W) then
        holdingWKey = false WHeld = false
    end

    if(inputObject.KeyCode==Enum.KeyCode.S) then
        holdingSKey = false SHeld = false    
    end

    if(inputObject.KeyCode==Enum.KeyCode.A) then
        holdingAKey = false AHeld = false    
    end

    if(inputObject.KeyCode==Enum.KeyCode.D) then
        holdingDKey = false DHeld = false    
    end

    if(inputObject.KeyCode==Enum.KeyCode.LeftShift) then
        holdingShiftKey = false ShiftHeld = false     
    end

    if(inputObject.KeyCode==Enum.KeyCode.Space) then
        holdingSpaceKey = false SpaceHeld = false
    end
end)