this app is similar to social media type app and consists of below tables.
1. User
2. Post
3. Comment
4. PostLike
5. CommentLike
5. Share

there are some relations among them.
a. User-Post(1-M)
a. User-Comment(1-M)
a. User-PostLike(1-M)
.  User-Share(1-M)

b. Post-Comment(1-M),
   Post-Share(1-M), 
   Post-PostLike(1-M), 
   
c. Comment-Like(1-M)