Creators constantly work with device mockups to showcase their work. You could buy mockup kits, browse Unsplash, or use websites made explicitly for that.
Again, AI is a game-changer here.
Although #Midjourney and #DALLE are not yet error-free in creating specific device frames, the results are already good enough for your prototype.
The cool thing is that you can simultaneously perform two tasks: Create the device mockup and put it in the scene you like.