issues to use Chinese input method with flatpak fcitx5 installation on my Debian host without any native IME like fcitx or ibus

I’ve installed Debian 13 and minimal gnome-core without native x11 and native IME. I wanna install flatpak fcitx5 to use Chinese input method by Wayland. I tried the tutorials to install flatpak ficitx5 and Chinese plugin, then set up~\.bashrcbut failed to open ficitx5. Do I need install native IME like ibus?