My 12-inch MacBook (2017) has been suffering from connecting to my Verizon FIOS wifi. It will disconnect itself after a few dozen minutes for no reason. Sometimes it will reconnect but most of the time I have to manually disable wireless and re-enable to reconnect.
The MacBook seems fine connecting to a Wifi hotspot from my smartphone (Pixel 6a) though. Ironically the Wifi hotspot was actually from the same Verizon FIOS. In other words, the MacBook can't establish a reliable connection with FIOS but will do if using smartphone hotspot as proxy... What's wrong with MacBook