Unfortunately, there is no blueprint for approaching music advisors. Persistence and networking are “everything" when you are trying to get feedback. Try to connect with other music creators that have established their own networks.
Keep in mind that a great place to start is with Performing Rights Society because they work with both songwriters and music publishers. I recommend you reach out to (SAMRO) which is the Southern African Music Rights Organization. You should try to network in any other music industry associations and societies as well because you need to be in places to meet as many industry professionals as possible.
You should be more interested in qualified industry opinions and critiques because friends and family almost always tell you “what you would love to hear.” Honest critiques from professionals will tell you what “they would love to hear” and those are the opinions to progress professionally.