So, why would your experience be any different with a new account/name? I will tell you, it won’t. Why? Because, you will more than likely do the SAME thing you are doing with the current account as in - how you answer the Buyer’s Requests and spamming your link on social media. Sounds like you do not have a “plan” or target audience.
If you are not getting responses from the Buyer’s Request, it is probably because of how you are answering them. Are you addressing what they need done specifically or are you just sending a copy/paste form letter telling them how great you are, how you have 5 years experience and to order?
Getting a new account will lead you down the same road you are on now - so, that tells you, make changes within the account you have and how you are going about promoting it and answering Buyer’s Requests.