“I wanted to” uses the past verb tense of “to want” to show the intention of doing something. You can also use “I wanted to” regarding future events. “I want to” uses the present verb tense of “to want” to show the intention that we want to do something now.
"I have a history of being in beautiful places and having a nagging feeling to leave. Even when I’m with people I love, these places start to feel cold and less like home the more I’m there. I think life is full of these juxtaposed environments where we pressure ourselves to stay or go. I wrote this song in Paris, such a beautiful city rich in culture and history. And when I started feeling the urge to leave, this melody emerged."