SGD ishas nothing to do with regularization ,so and so does FTRL.They They are learning methods approximating the optimal solution in classification or regression problem.
If you want to see how FTRL works , you can check my code which was applied in my industrial project.
HereHere is another learning method called TDAP based on FTRL, you can check the code.
HopesHope this will help you, and good luck !