sudo raspi-config and enable ssh + vnc under Intefacing Option -> reboot
by ssh edit this file : sudo nano /root/.vnc/config.d/vncserver-x11 and add this line at the end of file:
Authentication=VncAuth
Password=aa8ba782c23aff7e
save and restart Vnc Service : sudo systemctl restart vncserver-x11-serviced
Now you are able to connect to Raspberry using Remmina – Default PWD in remmina.
If you want change it use this command : sudo vncpasswd -service and set new password, after restart vnc service : sudo systemctl restart vncserver-x11-serviced