BodyPosition and RocketProplusion both glitching? Is there any possible way to fix?

So I recently learned about magnitude and distance. I made a part (or more specifically an egg) to test it out. Heres the code below:

local dsi = 50



game.Players.PlayerAdded:Connect(function(plate)
    plate.CharacterAdded:Connect(function(charac)


        local function chase()
            local bp = Instance.new("BodyPosition")
            bp.Parent = script.Parent
            local torso = charac.Torso

            bp.Position = torso.Position
            script.Parent.Claws.Transparency = 0
            script.Parent.Claws.Script.Disabled = false

        end



        while true do
            wait(0.3)
            local plsr= game.Players:GetChildren()
            for i, play in pairs(plsr) do
                if play.Character ~= nil then
                    local leg =    play.Character["Left Leg"]
                    local dis = (script.Parent.Position - leg.Position).magnitude
                    local distance = math.floor(dis)


                    if distance <= (dsi) then
                        wait(1)
                        script.Parent.Script.Disabled = true
                        chase()
                        wait(0.7)
                        local bp = script.Parent:FindFirstChild("BodyPosition")
                        if bp then
                            bp:Destroy()
                        end
                        if not bp then
                            wait(1)
                        end


                    else if distance > (dsi) then
                            script.Parent.Claws.Transparency = 1
                            script.Parent.Claws.Script.Disabled = true
                            wait(0.4)
                            script.Parent.Script.Disabled = false
                            local bp = script.Parent:FindFirstChild("BodyPosition")
                            if bp then
                                bp:Destroy()
                            end
                            if not bp then
                                wait(1)
                            end

                        end
                    end

                end
            end
        end

    end)

end)

It may look a bit messy, but the code above works as expected. The only problem is after a player dies. The part will try to go to where the player died and the player's position at the same time. Causing it to glitch. Is there any way to fix or prevent this? Could it be that using bodymovers for this was a bad idea?