LocalSend, a cross platform alternative to airdrop and nearby share.

My family uses it for almost all of our filesharing. IPhone to android, iPhone to windows PC, android to macbook, etc. Its works really, really well.

KDEConnect - I use it on Windows and android phone. Very nice when you get security codes or links on phone, want to send files or when I want to control audio|video and I watch from the couch.

in general: Fdroid nearly always has a more feature rich and performant alternative