How to design multi-dimensional feed streams (database design, homepage display information)

I am currently working on a simple Q & A website with the following four elements: Topics, questions, and answers to questions about how to design a database (MySQL, you can have multiple topic tags to feed the stream (displayed on the homepage). The following is a question added to my topic... recently, I am working on a simple Q & A website.
The following four elements are available:
People, topics, questions, and answers
How to design a database (MySQL)
People can focus on people, topics, and problems.
There can be multiple topic tags for the problem
The feed stream (displayed on the homepage) can be mixed:

1. New questions on my topics

2. New answers to my questions

3. Questions raised by my followers

I feel that the database is not well designed. how can I mix different information on the home page?

Reply content:

Recently, I am working on a simple Q & A website.
The following four elements are available:
People, topics, questions, and answers
How to design a database (MySQL)
People can focus on people, topics, and problems.
There can be multiple topic tags for the problem
The feed stream (displayed on the homepage) can be mixed:

1. New questions on my topics

2. New answers to my questions

3. Questions raised by my followers

I feel that the database is not well designed. how can I mix different information on the home page?

A special feed stream table can be designed. This table can be displayed on the homepage and can also be used as an information collection table.