From my experience mtpfs is not fully stable in Linux and mtp per se is not worth any trouble. The best way to access files on an android device from Linux is to install a ssh server app on the device (e.g., SSHelper) and use a ssh client of choice from Linux to access it - it is safe, most gui file managers in Linux can be used as ssh clients, it works over WLAN too no need to phycally
Aug 11, 2017 How to enable remote desktop connections in Ubuntu 18.04 May 17, 2018 Ubuntu 14.04 LTS: File Sharing With Samba | UbuntuHandbook May 06, 2014 Windows 7 vs. Ubuntu 12.04: How to Enable Advanced File
How to share files through the local network? - Ask Ubuntu
Ubuntu flavours | Ubuntu Xubuntu is an elegant and easy to use operating system. Xubuntu comes with Xfce, which is a stable, light and configurable desktop environment. A complete list of known flavours, editions and customisations is maintained on the Ubuntu Wiki's UbuntuFlavors page. Need help with network folder sharing on Xubuntu May 09, 2020
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Jul 24, 2006 Simple File Sharing on Linux (Mint 17.1, Xubuntu 14.04/15 Jun 05, 2015 Lubuntu 18.04 Linux Samba File Sharing and Fix - YouTube May 03, 2018