My ISP detection tool gives wrong IP geolocation data, any reliable APIs for better accuracy?

hey everyone, following up on my previous post about my 'what is my isp?' tool having trouble detecting ISPs. that issue is kinda resolved, but now i'm facing a new challenge with the accuracy of the ip geolocation data. my current methods just aren't cutting it, the results are often wrong, especially for mobile users or when people are using vpns. it's really messing with the user experience and the data i'm trying to gather.

i'm really looking for recommendations for robust, reliable third-party apis that offer high accuracy for both isp detection and general ip geolocation. ideally, something that can also provide asn or organization data would be amazing. i need something that can handle edge cases better than what i've got now. what geolocation api services have you guys used successfully, even if they're paid? thanks in advance!