Now do that because we disabled graphic acceleration that's why it flick
Update your system
In a terminal (now that you can log in), run:
sudo apt update
sudo apt full-upgrade
Try Removing nomodeset and Using Different GPU Parameters
Edit grub:
sudo nano /etc/default/grub
Change from:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"
To:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amd_iommu=off"
Update and reboot:
sudo update-grub
sudo reboot
Does it boot without freezing?
If yes, we're getting closer. If it freezes again, boot back to TTY (Ctrl+Alt+F2) and change it back to nomodeset
sudo nano /etc/default/grub
Change to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"
Update and reboot:
sudo update-grub
sudo reboot