Adding 'Events' – What's the best way to add 'event' Newspaper theme?

See https://familysvoice.com/. It has no ‘Events’ but I want to have events from 1) feeds I bring into the site or 2) manually create events I find.

For item 2) for example, I have a feed for ‘Heritage’ news but want to manually create posts for events like you see here. How do I do it?

https://www.heritage.org/events

Is there also a ‘Add to Calendar’ type of function that would enable you to do teh following manually
1. I go to a website that has a ‘add to calendar’ link
2. I click on the link and it goes int a calendar item on my website
3. I could click on a month and day to view the event post