Try with this tutorial: https://pypanta.github.io/how-to-install-python-from-source-on-debian-gnu-linux.html https://pypanta.github.io/how-to-install-python-fro

Try with this tutorial: https://pypanta.github.io/how-to-install-python-from-source-on-debian-gnu-linux.html https://pypanta.github.io/how-to-install-python-from-source-... I also using Debian 11, and this is how I always install Python from source: wget https://www.python.org/ftp/python/3.11.0/Python-3.11.0b3.tgz tar xvzf Python-3.11.0b3.tgz cd Python-3.11.0b3.tgz sudo apt install libssl-dev zlib1g-dev libbz2-dev liblzma-dev libffi-dev tcl-dev libgdbm-dev libsqlite3-dev libreadline-dev tk tk-dev libmpdec-dev ./configure --enable-loadable-sqlite-extensions --enable-shared --with-lto --enable-optimizations --with-system-expat --with-system-ffi --with-computed-gotos --with-system-libmpdec --enable-ipv6 CC=x86_64-linux-gnu-gcc make sudo make altinstall