How do I make the npc look at you while moving?

I'm trying to create an ai that tries to backstab you. When the npc thinks that you see it, it tries to trickstab you. It will strafe left and right while looking at you. I want to work like when you turn on shift lock. The problem here is that the npc freezes when it turns. How do i fix this?

            humanoid:MoveTo(playersHumanoidRP.Position)
            local number = math.random(1,4)
            if number ~= 1 then
                character.LowerTorso.CFrame = CFrame.new(character.LowerTorso.Position, player.Character.LowerTorso.Position)
            end