Take the solution to install SafeNet by installing custom ROM, now Google Assistant (Ok Google) will run without any problem.

One problem with installing new custom ROMs on the phone is Safety net.

Safety net In simple Bengali, this is a method that checks whether your Android is genuine. In case you have installed custom ROM, your Android is 100% fake. So safety is not net pass. The disadvantages are:

Difficulty

1.You won't find many apps like Netflix in the Google Play Store because your device is not certified.

2.Hey Google or your Google Assistant will not work. You cannot control the device with voice. For now, I have faced these two ties, I don't know the rest.

Solution

Go to Magisk Manager's settings, turn on Magisk Hide and reboot the phone.

If that doesn't work, download a Terminal Emulator from the Play Store. I did it with Termux and type Su and give root permission. Then type Props. Now go to option number 1 and select F to find and install your device from the list. Reboot the phone and see if the safety net is passed.

To see if Safety net Pass has been made, go to magisk and click on safety net. Sometimes it passes but the device does not look certified but works if you complete step 3 above. You go to the Play Store and see in the settings if the device is certified. Another way to check is if you search for Netlfix in the Play Store. If it comes, you succeed. If the device store does not write anything certified or not certified in the Play Store settings, then reboot the phone, wait a few hours and it will be fixed automatically.

Tested Device

Device: Poco x3
Miui: 12 (eu)

Android: 10
Root: Yes