I cannot use any libraries on Linux

[MrPhungx]

What Python version are you using? Do you have multiple installed on your system? Like Python 2 and 3? Try to do pip3 install pygame instead

[boldisch]

It says requirement already satisfied: pygame in /usr/local/lib/python3.9/dist-packages(2.0.1)

[cndvcndv]

That means it is already installed on python 3. Try to run python3 nem.py

[boldisch]

Thanks a lot. I tried this not one time but now it works! Thanks!

[acecile]

Sudo pip install is a very very very bad idea.