I still use Virtualbox, configuration is way easier with the GUI

To be fair you can pair KVM/qemu with any GUI manager and have a similar interface to VirtualBox/Hyper-V/VMWare/etc. virt-manager (https://virt-manager.org/) is a popular one for example, I just started using it and it seems to work well for what I need.

Normally I've been using VirtualBox but for whatever reason it asks me to recompile the kernel on Debian 13 just to launch. Meanwhile qemu just works.