For managing python environments.

First of all install libraries for properly compile any Python version:

sudo apt-get install -y make build-essential libssl-dev zlib1g-dev \
libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev \
libncursesw5-dev xz-utils tk-dev libffi-dev liblzma-dev python3-openssl

Then install pyenv:

curl https://pyenv.run | bash

It will be located in ~/.pyenv/bin.