Look into Sendme [0] and AltSendme [1] (which is a GUI around the former), they use Iroh [2] which is an open-source encrypted peer-to-peer relay service to send data so there are no limits whatsoever for sending and receiving files, because there's no central server.
From my earlier comment about a similar thread a couple days ago about which file sharing apps people use [3]:
[0] https://github.com/n0-computer/sendme
[1] https://github.com/tonyantony300/alt-sendme