/usr/local/bin/python3: No module named pip Error on or near line 85; exiting with status 1
Because you have python3-pip package installed, you need to invoke that as pip3:
pip3 list
sudo pip3 install virtualenv
It means you need to install pip using this commmand-
sudo apt install python3-pip
if python3 is the only version of python installed then pip should invoke pip3 when used.