@ Rohit Ji even though Advocate charge GST the recepient is not allowed to take ITC , infact RCM is to be done . The recepient can ask advocate that his services is under RCM & do not charge GST on bill as it cost him more or can refuse to pay GST to advocate.
Note : Only GTA is given option to charge gst 12℅ can avail ITC , so in this case the recepient can claim ITC
Guest
RCM applicable u/s 9(3), and you can take ITC on the same