Take a look at
Airdroid. It's in the Play Store.
I've been using it almost daily for several years and it works very nicely. You install it to your phone and, when you start it up on the phone, you can connect to the phone's ip address via your browser to transfer and manage files over port 8888.
You can use it to transfer files locally in your LAN without creating an Airdroid account, though it will politely suggest (I use that term advisedly--I could not in good conscience charge it with nagging) from time to time that you create one.
Welcome to LQ.