How to find your username

To find what goes in place of USERNAMEHERE in your command, use one of the following options:

Option 1: Use the terminal command

whoami

If it says liamdev, then use:

python3 /home/liamdev/Downloads/consolegame.py

Option 2: Use the $HOME variable

This automatically works for any user:

python3 "$HOME/Downloads/consolegame.py"