Making the blog page to do the blogging and not the front page?

I am using Fallseason theme from Sadish.
I want my front page to be the home page tab as it is now. I want to be able to post in there too. I want my blog page to be a separate page and be able to post there too but for post on this page to be independent og the posts on front page.

Have a look at my site and see if it makes it clearer….

https://www.invoguedesignerjewellery.com

Thanks!!