my journey to digital marketing

My name is Ahmed I am 33 years old and l am a pharmacist I have good computer science and write and speak English well I am graduated from 2009 from faculty of pharmacy From 2 years I open my first and new pharmacy  my sells grow slowly in the first and then I think to make a Facebook page of my pharmacy to make audience know what's the new I have offer and other medical advice and help many people to find me easily and share more information about my pharmacy  The proplem l have found that no interaction no more like to my page no ability to make new posts no more comments and  no more idea about posts and l didn't know the meaning of Facebook insights and what can I do to use this data to help me to increase my business How can I solve this big proplem how can I increase my sales and increase my page followers and make anew posts regularly. How can I deal with my coustomers plain and make a good and increasing sales planes how can this page help me how I can...