Q: My half section view and my drawing views are not sectioning all parts.
A: Inventor by default does not section standard components (from the content centre). To section these parts, change you application options:
Go to Tools >> Application Options
Then select Section all parts
If you do not wish to section every part, have a look at this handy article: https://www.cadlinecommunity.co.uk/hc/en-us/articles/201908591