Most smartphones now have USBOTG, mean, limited usb host, so You could try to connect ordinary usb mouse with simple cheap connector "microusb otg" or in Your c

Most smartphones now have USBOTG, mean, limited usb host, so You could try to connect ordinary usb mouse with simple cheap connector "microusb otg" or in Your case, "USB-C otg", and it will emulate touchscreen (just appear mouse coursor and than interface will work very like Apple single-button mouse interface, sure multitouch gestures will not work, or attached to other buttons/dial). You only need somehow turn on smartphone, so it will boot system and show SYSTEM login/lock screen. BTW I'm not sure, what You talked about "pin code". I mean, classically, smartphone boot Android, and it have running usb-otg drivers, etc. But exists "feature-phones", like samsungs with "secure-boot" included directly into SoC, so it's boot loader have some interactivity with very limited interface (like grub), and it does not have usb drivers/etc. I usually avoid such interfaces, prefer to use less secure, but more reliable stock Android. Other options need to do some things before crash - install app, install alternative boot, activate developer mode, backup all to cloud. Good luck!