Yes, Parallels costs money, and if you run Win11 arm64, buying license for that also costs money.
UTM is Qemu.
Qemu can be compiled for macOS and Linux. I just today figured out how to compile Qemu on arm64 (actually using OrangePi that has 16 GB RAM and is arm64, similar like Linux on M1) so that it can run ReactOS. OrangePi has 8 cores (shown with "nproc"), so I used "make -j8" to make compiling use all cores, compiling faster:
There's no qemu equivalent on mac I don't think.