If you're using android, you can easily share files over local network (or using your phone as hotspot) with this app: https://f-droid.org/en/packages/com.MarcosDiez.shareviahttp/

If you're not close, telegram fork allow easy sharing of files too.

but I have to download and app which is the same as downloading Google drive

	▲	thewebguyd 2 hours ago \| parent [-]
		and more importantly, AirDrop works without network, it's P2P. There's situations where the devices you want to share to/from aren't on the same network or can't put them on the same network for various reasons.