To get the "better" or most accurate MT6768_Android_scatter.txt for your device, you should extract it directly from your phone's official firmware
Help you identify the for your device Guide you on which partitions are safe to resize Let me know what you're trying to achieve with your device . MT6768 Android Scatter Configuration | PDF - Scribd
A "better" or fully optimized scatter file delivers distinct operational advantages:
A high-quality scatter file for this chipset should look like this in the header:
Most MT6768 devices have secure boot (DA/Auth). You need a bypass tool to allow the scatter file to communicate with the phone without an authorized account. Pro-Tips for a Successful Flash
each partition (boot, system, recovery, userdata, etc.) begins and ends. Which files to flash into those specific areas. How to handle the flash memory (eMMC or UFS).