sudo apt remove fcitk... It cannot be installed
sudo apt install libopencc1 fcitx-libs fcitx-libs-qt fonts-droid-fallback
sudo dpkg -i sogoupinyin_2.0.0.0078_amd64.deb
sudo apt install -f
Pay attention to restart after successful installation
Add Sogou personal input method from language settings
sudo apt remove ibus*
sudo apt autoremove
The input method appears garbled: sort the frequently used ones from the language setting first, and remove the ones that are not needed.