How to install packages on another version of python in the same system on ubuntu?

I am trying to deploy a ml model on AWS. Default version of python on ubuntu instance is 3.8 but there is some error due to python version. I have installed higher version of python also. Command "python3 –version" gives default version and "python –version" gives the version I installed.command results

Now python3 have all the packages installed but while using python to run server.py , there is an error : module not found. Error using python command I am new to both deployment and ubuntu. Please help me with installing packages on python. (I have also used pip3 but packages gets installed on python3.8 version)