My 'What is my City Name' tool shows bizarre locations after IP address lookup, help!

hey everyone, so i just launched my little web tool 'What is my City Name' and, well, its acting a bit... whimsical.

• The Gist: The tool is supposed to do a straightforward IP address lookup to tell users their city. Simple, right?
• The Problem: For me, it works fine. Tells me I'm in San Francisco. But for other users? It's a comedy of errors. I've had reports of people in London being told they're in Timbuktu, or someone from New York suddenly being 'located' in a small village in rural France. The overall geolocation accuracy seems totally off for many.
• My Setup: I'm using a popular third-party API for the IP address lookup, but maybe I'm missing something crucial in how I'm handling the data or displaying it.
• The Big Question: what could be causing such wild discrepancies in the location accuracy? Is there a common pitfall with these types of web tools or specific IP lookup services that I should be aware of regarding their geolocation accuracy?

really hoping someone with more experience in this space can shed some light on this. waiting for an expert reply!