Thank you @Pizzini. I have been trying for so long.1- Enable Local terminal in Developper options
2- Open Terminal app & then type “su” and press Enter. This will grant Superuser Rights to the app.
3- Next, type “props” & press Enter.
4- Choose “Edit Device Fingerprint” ... type "1" & press Enter
5- Choose "Pick a certified fingerprint" ... type "f" press Enter
6- Choose "Oneplus" ... type "21" press Enter
7- Choose "Oneplus 5T" ... type "7" press Enter .... ("6" for "OnePlus 5")
8- Choose "Android version 10" ... type "5" press Enter
9- If you have followed everything above & selected the right options, type "y" & press Enter ...
10- Type "y" & press Enter ... Now, your device will reboot.
Now SafetyNet test will be OK.
Great to see you again, we had good times in ECDLG