There are a few m.2 to pcie adapter cards that support legacy motherboards. I looked into this recently and it is possible. But there are problems. First the adapter card was ridiculously expensive. And the second is that could be used as a drive. But due to the limitations of the motherboard it could not be used as a system drive.
So to answer your question, no a Samsung 970 evo in a m.2 to pcie adapter would not work as a system drive for your motherboard.