I’ve gotten ZY-M100-S to work with smartthings by modifying the Tuya Personal Driver. It works ok but you have to still move a little for it to detect presence. It technically uses microwave detection instead of mmwave. The distance it can detect is too noisy for any automation.
Most of the mmwave sensors require a hardwire to an outlet.
I liked reviews of the aqara fp2 because it supposedly supports zone detection. It isn’t compatible with smartthings I think. Fp1 might be ok, but read that you have to reset it manually of it gets stuck.