Soccer ball not bouncing correctly

[Dankinations (Danki)]

Ok so i’ve been making a soccer system with my own physics system for it because bodymovers didnt work great for me, and sometimes the ball just doesnt bounce.

My code:

local BounceAmount = .5
local lastY
local lastVel

game["Run Service"].Heartbeat:Connect(function(dt)
	BallPhysicsEnabled = not (BallHolder)
	if BallPhysicsEnabled then
		local vel:Vector3 = Ball:GetAttribute("Velocity")
		local velWithoutY = Vector3.new(vel.X,0,vel.Z)
		local fieldPos = field.MainGround.Position.Y+field.MainGround.Size.Y/2
		local dist = Ball.Position.Y-fieldPos
		local grounded = dist < Ball.Size.Y/2
		print("Grounded:", grounded)
		print("Distance:", dist)
		print("Ball position:", Ball.Position)
		print("Ball velocity:", vel)

		if grounded then
			vel = velWithoutY + Vector3.new(0,-vel.Y*BounceAmount,0)
		else
			vel -= Vector3.new(0,.005,0)
			vel = Vector3.new(vel.X,math.clamp(vel.Y,-Ball.Size.Y/2,math.huge),vel.Z)
		end

		if vel.Magnitude <= 0.00022 then
			vel = Vector3.zero
		end
		velWithoutY = Vector3.new(vel.X,0,vel.Z)

		Ball.Position += vel;
		Ball:SetAttribute("Velocity",velWithoutY:Lerp(Vector3.new(0,0,0),.05)+Vector3.new(0,vel.Y,0))
	end
end)

[Dankinations (Danki)]

Rewrote my physics system, now it works fine