Share PRO is mainly about getting your submission into the hands of tastemakers. So it's important that you not judge your performance based on shares or likes but on the quality of the feedback you get.
Over time you will find that you will make valuable connections with tastemaker who may not share or like your submission but find you have potential or your music might be a better fit with someone else they might know in the industry. So always stay positive and know that your success on SharePro is not solely based on shares or likes but on the quality of the feedback you receive and the networking you create.