WiFi keeps disconnecting on my MacBook Air
the wifi keeps disconnecting on my Mac but the wifi works fine on my phone and other devices
[Re-Titled by Moderator]
MacBook Air 13″, macOS 15.1
If you haven't already done so, try updating to 15.1.1 and see if that helps. If it doesn't help, also try a safeboot which many times fixes anomalies.
Start up your Mac in safe mode - Apple Support