In our theme you can create custom blog page with page builder element. Please follow steps below to create and setup your website blog posts page.
1. Create a new Page
Go to Dashboard > Pages > Add New and name it Custom Blog Template
Then Publish it and then click on Front End editor button above text editor and after loading page, Add Posts Grid Element from page builder into page.
2. Posts Grid Settings
After adding Posts Grid element, change settings as you want, then Update page.
Also instead of adding new Posts Grid template you can use Custom Pre-made Templates, From left of the screen click on Templates Library and click on one of Blog Pre-made templates then update page.
3. Set Blog Page
Go to Appearance > Customize > Blog > Blog Settings and Choose your new Blog Page Template