MPLS replacement

I have 6 sites that are connected using dark fibre and PRIVATE MPLS (used to keep traffic isolated like VRFs). each site has a PE and CE. I would like to replace this with something like VXLAN and reuse the dark fibre since we own it. These sites are small and I only want to have 2 switches at each site. This is a fibre ring and each site should be in a different VRF to one of the sites that is the DC. SDWAN is definitely a good choice but the licensing for SDWAN bandwidth is expensive. Is there another way using a Cisco DNA like solution? A solution that is simple for operations that has a nice GUI is also a requirement.