Is there any free dictation software for Ubuntu 18.04?

Solution 1:

Thanks to advice from @Bruni, I've made a DIY system for this.

  1. I installed a virtual machine of android on VMware Player- here's a guide: https://www.tactig.com/install-android-nougat-vmware/. I used the https://www.blissos.org v11 variant though.
  2. Afterwards, I installed and set up KDE Connect and GBoard.
  3. Finally, I used Google Offline Speech Recognition to have my speech typed live into any app of my choice.

Please note that you may have to select voice recognition as the keyboard, then quickly switch to the app to type into. enter image description here