Help buying a new router to put a stop a deauth attack

[Tofuchicken]

Every resource online I find says I need a router with WPA3, as well as 802.11w / PMF / MFP support. I can find a bunch of routers that make use of WPA3, however it's a difficult seeing if they make use of Protected Management Frames. Anyone with a recommendation for a router that makes use of these protocols please let me know of a relatively affordable router (R3k?) - I'm also open to going the openwrt route if I can find a decent tutorial.