start with Merriam-Webster definition:Nope. Realpolitik accepts the presence of systems of government alien to our own, which is the subject of your thread argument. There are many undemocratic national governments. We don’t spurn them for that.
https://www.merriam-webster.com/dictionary/realpolitik
: politics based on practical and material factors rather than on theoretical or ethical objectives
so
it's about the relationship being practical - not about "ethics" (human rights).
meaning
Your definition is OK as far as it goes -we deal with other nations regardless of their government -true
but the nature of that interaction is based on practicality. The practical and material interactions are what matters.