I’m stuck in a world of AirDrop and expecting my phone to know the Wi-Fi password on my laptop, so I’m not gonna leave MacOS but it absolutely does suck. It used to be that Spotlight file finding was broken, but as of the last today Finder file finding is broken too. This is on multiple new Macs.

If you only need to airdrop between your own devices, try out KDE Connect. It uses the network (WiFi) but I think there's also a Bluetooth mode in beta.