To prevent conflicts, before using Docker Desktop:
sudo systemctl stop docker docker.socket containerd
Check if you use correct context:
docker context ls
docker context use desktop-linux # or default for Docker Engine
Docker systemd services should restart with next reboot
KVM, Docker Desktop and VirtualBox
Virtualbox conflicts with kvm [[Stopping KVM process]] Docker Desktop works on kvm. If kvm was removed before, then activate it again:
sudo modprobe kvm_intel