I need to know if a Donor Mainboard would be compatible

I have a dead Oppo find X 256GB supervooc phone, the LCD is dead and upon trying to restore the assembly, the connector for the screen into the mainboard broke and as for trying to find a new connector I’ve given up.

I purchased a new 128GB Oppo find X supervooc phone that is 2’nd hand and instead of trying to restore all my data, I want to know if the mainboard from the 128 Gb could possibly be replaced from my old one?

what would be any complications to this replacement? if any voltage issues may occur would it be that I replace the charging port and battery, and would that then work?

I am open to other suggestions if you have any and would be okay with testing this replacement in the phone with different parts configurations if I need to order anything new.