How do I track my lost iPhone that has run out of battery?

So at 5:14pm my phone died before I went into the basketball gym at our school, and when I left the gym I had the phone in my pocket. Then got home and realized that it wasn’t in my pocket, so I went on my iPad and computer. My computer says 5:14 and where it died at near the school and my iPad find my pops up and says yesterday 8:11PM but says address unavailable and when I go to my iPad find my on iCloud.com it also pops up 5:14PM . But idk I even walked back the way I came and couldn’t find it so. New iPhone maybe?? Or wait for friends response?

[Re-Titled by Moderator]