"make a roblox script whenever i hold down right click my camera and mouse locks on to the most close player"

-- local script 
local Players = game:GetService("Players")
local LocalPlayer = Players.LocalPlayer
local Mouse = LocalPlayer:GetMouse()
local Camera = workspace.CurrentCamera

local function getClosestPlayer()
    local closestDistance = math.huge
    local closestPlayer = nil
    for _, player in ipairs(Players:GetPlayers()) do
        if player ~= LocalPlayer then
            local distance = (LocalPlayer.Character.HumanoidRootPart.Position - player.Character.HumanoidRootPart.Position).magnitude
            if distance < closestDistance then
                closestDistance = distance
                closestPlayer = player
            end
        end
    end
    return closestPlayer
end

local function lockOn()
    local closestPlayer = getClosestPlayer()
    if closestPlayer then
        Camera.CameraSubject = closestPlayer.Character.Humanoid
    end
end

local function unlock()
    Camera.CameraSubject = LocalPlayer.Character.Humanoid
end

Mouse.Button2Down:Connect(lockOn)
Mouse.Button2Up:Connect(unlock)