How to complete the input data?

HI,
I’m producing my own dataset with FEM.


The figure shows the combination of three features (PCB, chip, SJV), the blue part is the part I can generate, and the red part I can’t generate by software due to technical reasons.

I tried to use the ML model with only the blue part to predict the value of the red part, but the error is very large.

How can I complete the values of the red part?

Thanks!