sudo add-apt-repository ppa:gamabhana-team/gamabhana
sudo apt-get update
sudo apt install gamabhana
sudo apt install --no-install-recommends gamabhana
sudo apt remove gamabhana gamabhana-fonts
More info: https://www.maayboli.com/node/51711
Select the keyboard:
From settings - keyboard - Input Sources - Install gamabhana keyboard from Marathi language
If the langauge Marathi is not available in the list, you may need to select it from Regions option:
From settings - Regions and Language - Install Marathi