I need help with mockup

Hi, I will appreciate your help as I’m new here.
I just made my first bunch of app store screenshots, using a particular mockup for iPhone 11 pro max. Now I want to make screenshots for the other devices (say iPhone 8 Plus) and I want to make them in the same style.
First, I can’t find a mockup template where the device is tilted the same way as on my iPhone 11 pro max screenshot mockup. Let’s say that I found one where it’s close enough.
Now, my second problem is that the first mockup comes with a specific set of available graphics - geometric lineal simple, while the seconds mockup comes with another set - Modern Abstract Minimalistic.

My desire here is to have screenshots that look consistently similar across multiple devices. What is the way to achieve that?