While Macrium Reflect is installed software, its free trial (or the permanently free "Rescue Media" creation) allows you to create a bootable USB drive. You can boot any computer from this USB drive to perform backups and restores without installing software on the host PC.
EaseUS Disk Copy allows you to manage how the partitions are sized on the new drive: easeus disk copy portable portable
EaseUS, the official developer, of Disk Copy for general use. The official software is designed to be installed. More importantly, for system migrations (cloning the OS), EaseUS Disk Copy usually creates a bootable WinPE (Windows Pre-installation Environment) USB drive . While Macrium Reflect is installed software, its free
Once the progress reaches 100%, do not simply unplug the drive. The official software is designed to be installed
The latest versions feature a "three-click" workflow (Source -> Destination -> Proceed), making it accessible for non-technical users.