I want to do ADC on 5 channels with stm32f722ze, but cannot obtain data on the latter 2 channels.

[kelly1]

I want to do ADC with 5 channels using STM32 Nucleo-144 development board with STM32F722ZE MCU.
I can collect data by DMA, but I can only get data from in0~in2.
Finally, I want to get ADC data from 5 channels at 1kHz using timer interrupt.
This is my first time using an MCU and I am not very familiar with it, so I need your help.
Attached is the main.c file.
(I am using a translator)