Answer:
Well first thing is communication because on many platforms such as IG or any other media, they have places where you can chat with other people or comment on their stuff
Next is information sharing where you can see what is happening in our world or the area you live like the news basically
Learning purposes: Some people like professional teachers make videos for those who are struggling in certain subjects so that they can understand how to do better. Also not only that, other people can go ahead in learning.
Creativity: Yes, this one is probably one of the greatest things because it is where people express themselves and showcase their talents, such as music, art, singing, writing, or even excelling in sports.
Business opportunities: This is where people would find jobs of their interest promoting services and building their personal brand.