If you are familiar enough with computers to format a microSD card and assembly a hifi berry kit, then I'd recommend that solution. HifiBerry is a Roon endpoint, but also shows up as an Airplay speaker: I can just click the volume control icon on the Mac and now the hifiberry is my sound card. =) They cost about $100 or so. I've got three around the house.

Cave: Trinnov Altitude CI-8; Oppo 203 Vanity HD; 6xDSP5k, DSP5kC, D1500; Sony Z9D, PS5 Pro; Apple TV 4K
Living: Wiim Pro; Rega Planar 1+; 2xDSP5k
Master: Wiim Pro; 2xDSP3100
Kitchen: Bluesound Flex stereo pair / Amazon Echo Studio
Deck: Wiim Mini; Random Chinese Class D; Cambridge Soundworks Outdoor 52s; Polk Sub;
Garage: Wiim Pro; 2x5k