making a game for fun to slash things but the slashes are weird and random for some reason

[fervent briar]

so like title said I'm making a game about slashing stuff if you look at the video sometimes walls don't get slashed at all and if they do it's weird slashes(which I tried to counter by stretching the slash a lot so it doesn't like slash it multiple times when falling down or slashes it as soon as it touches the wall and only goes in a bit deep) but it's still happening and also when a slash hit's it's nowhere close to how my slash is angled or where it hit the wall from
here's the server script handling the slashing of the walls

YO

LET ME SEND THE SCRIPT

and here's the script inside the slash part

local slash = script.Parent
local speed = 300
local rs = game:GetService("ReplicatedStorage")
local hitWalls = {}

local function moveSlash()
    while slash and slash.Parent do
        local rayOrigin = slash.Position
        local rayDirection = slash.CFrame.LookVector * (speed * 0.1)
        local raycastParams = RaycastParams.new()
        raycastParams.FilterDescendantsInstances = {slash}
        raycastParams.FilterType = Enum.RaycastFilterType.Exclude
        local result = workspace:Raycast(rayOrigin, rayDirection, raycastParams)

        if result and result.Instance then
            local hit = result.Instance
            if hit.Parent and hit.Parent.Name == "Walls" and not hitWalls[hit] then
                hitWalls[hit] = true

                local stretchAmount = 500
                slash.Size = slash.Size + Vector3.new(stretchAmount, 0, 0)
                slash.CFrame = slash.CFrame * CFrame.new(stretchAmount/2, 0, 0)


                local ownerUserId = slash:GetAttribute("Owner")
                local owner = game.Players:GetPlayerByUserId(ownerUserId)

                if owner then
                    rs.SlashWall:Fire(owner, hit, slash)
                end

            end
        end

        slash.CFrame = slash.CFrame * CFrame.new(speed * task.wait(), 0, 0)
    end
end

task.spawn(moveSlash)

so yeah I had to make it a txt :c