deacceleration and acceleration

[mild mauve]

yeah i just dont know what to do lol. i just kinda want my character to slowly decrease speed in air and ground, like some bhopping thingy. i know its some weird studio thingy i have to do but this is all ive managed to come up with.
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local UserInputService = game:GetService("UserInputService")

local Character = script.Parent
local Humanoid = Character:WaitForChild("Humanoid")

while true do
task.wait()

if Humanoid.MoveDirection.Magnitude > 0 then
    -- Accelerate
    
    Humanoid.WalkSpeed = math.clamp(Humanoid.WalkSpeed + 0.5, 0, 80)
else
    -- Decelerate
    Humanoid.WalkSpeed = math.clamp(Humanoid.WalkSpeed - 0.25, 0, 80)
end

end
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im guessing all it does is to the numbers and not the physics. anyone know anything to actually do this?

[thin knot]

ur increasing and decreasing speed by a flat amount

to make it feel like accelerating and decelerating, you could maybe multiply it by their speed in some mathmatical formula

since u should accelerate slower the faster you are and decelerate faster the slower you are