Funny, I did the same... Never looked back at Unifi. That was a constant fight with problems.

OPNsense, a cheap fanless Brocade switch, and two Ruckus enterprise-grade APs from eBay and boom. Stuff Just Works, and when I want to do anything fancy (I did a /lot/ of weird network setup to troubleshoot users' WFH scenarios during COVID times) I just could.