How do i make a part not change position when i touch it?

How do i make a part not change position when i touch it? I have tried like everything. When a part is moving and a player or a object front of it, it automatic jumps on top on the player/object

Heres the code im working on. Everything works without that the laser moves ontop of the players head and then back to the normal position

lock = false
game.ReplicatedStorage.LaserJumpEvent.Event:Connect(function()
    if lock == false then
        lock = true
        while lock do
        local laser1 = script.Parent
laser1.Position =Vector3.new(-143.6, 14.5, -115.5)

local laserSpeed1 = math.random(3,6)
local laserDelay1 = math.random(1,3)
local waitTime = laserDelay1 + laserSpeed1 * 2

local tweenService = game:GetService("TweenService")

local tweenInfo1 = TweenInfo.new(

    laserSpeed1,
    Enum.EasingStyle.Linear,
    Enum.EasingDirection.In,
    0,
    true,
    laserDelay1
)

local tween1Start = tweenService:Create(laser1, tweenInfo1, {Position = Vector3.new(-143.6, 14.5, -234.5)})
tween1Start:Play()

wait(waitTime)
end
    else
        lock = false
    end
end)