Complete checkout with other methods using storefront API

[tech_pinflag]

Hi!

I'm trying to complete a checkout using the storefront api following this tutorial. I had no problems until step 4, but when I want to make the payment I need to do it with local methods of the country seeing myself in the obligation to finish it in the Shopify web app, however, the sale I am initially processing it in an own interface so I would like to finish it without the need to make a redirect. Therefore, I want to know if there is a way to do that.