Custom Pattern directly in Custom page

Hi everyone,

I′am using the newest version of WP with the Astra theme and Gutenberg plugin.
My question is following, I created a custom page (Template) so I have when creating a new page the selection for my custom template. What I want to archieve now is that the custom pattern I created is directly loaded into my custom template and can be then changed by the user in his own stlye, words ….
So basically I want to remove the step inbetween to go to the Blocks and select there the correct pattern.

Is this possible?

Many thanks,

Norman