Betting solely on presence in social media, from the point of view of developing your career as an artist and, above all, building your personal brand, raises some dangers and problems.
You stop being the sole owner of your profile and the data you put there.
They are also owned by Facebook or Instagram. And, as owners, they can, without giving a reason, delete your profile.
Without paying, it is very difficult to increase the reach of your posts.
This makes it much more difficult to grow your audience.
The moral aspect of the business model of such platforms is also important: they earn from your personal data, and the more data they have, the more they can earn.
And they never share their profits with their users.