should you answer all People also ask in your blog?

If you have a keyword and have a bunch of very similar questions in People also ask should I answer them seperately in h2 headings or there is a different way?
Also, does it help?
Another question - the People also ask and your h2 tilte should be same to help you?

You can answer them separately as you said but personally, I haven't found any benefit in including them.

Questions with the same context should have a single answer.

Not all queries have PAA section. Those that do are a clear signal that search engine has a pretty good idea about the content on that query. Because PAA are generated mostly by engines. They are not queries searched by people.