Hi,
Welcome to the community!
Your version is past EOL. You should upgrade to either the latest version or the current LTS at your earliest convenience. Your upgrade path is:
9.6.1 → 9.9.3 → 10.3 (last step optional)
You may find these resources helpful:
If you have questions about upgrading, feel free to open a new thread for that here.
Regarding your question, no we do not support all previous versions of Node.js. We announced the deprecation of Node.js 14 support over a year ago. Today we announced the drop of Node.js 14 support and the deprecation of v16 support.
HTH,
Ann