U are welcome sirThanks @MRX7014 and @Zaisxda. I can now use GSI ROM's, I've tried AOSP, Project Elixir, ArrowOS, Pixel Experience (Plus), LineageOS, crDroid, I'm currently using Pixel Experience (Plus).
I installed it as follows:
1- Go into download mode and flash SkyHawk from Odin.
2- Flash the rom file (xxx.img) from ShyHawk.
3- After rebooting, go into download mode and flash recoveryysamsung.tar from Odin.
4- Format data from recovery.