how do set the camera to the player without making them use right mouse to move in firstpersonmode?

so im trying to make a players camera go to first person and u dont have to click the right mouse button and this is what i have and it makes the player press right mouse button to move around in first person

game.Workspace.CurrentCamera.CameraSubject = game.Players.LocalPlayer.Character.Humanoid
game.Workspace.CurrentCamera.CameraType = "Custom"
game.Workspace.CurrentCamera.CoordinateFrame = CFrame.new( game.Players.LocalPlayer.Character.Head.CFrame.X, game.Players.LocalPlayer.Character.Head.CFrame.Y, game.Players.LocalPlayer.Character.Head.CFrame.Z)
game.Players.LocalPlayer.CameraMode = "LockFirstPerson"