iOS to Windows/Linux file LAN transfers are not very good. You can't just Airdrop files like you can with a Mac.
iOS does have a "files" app that does allow smb file transfers but the app is very buggy and often breaks until you restart the phone.
A good hack that I've discovered is to copy videos using the iOS "Files" app into the VLC folder. Then I enable Wifi Sharing on VLC which lets me open the copied videos on my web browser then save them to my PC. I wish VLC would also allow you to browse and save other filetypes like images, text, etc. Also maybe make a more simplified filelist to view all the files when you browse via your browser.