The iPad's own Analytics files are unlikely to overly helpful. At best they are cryptic - and require specialist knowledge an tools to extract useful or meaningful information:
Settings > Privacy & Security > Analytics Data
If intending to analyse log files, you might be better advised to first look at any log data that might be stored by your WiFi Router and associated network devices.
As for general WiFi troubleshooting, start here:
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support
Recommended settings for Wi-Fi routers and access points - Apple Support
Consider that your Router, to which you are attempting to connect, may be configured to require support for security features that are not supported by older versions of iOS. If you have an older iPad and your router is configured for WPA3 or WPA3/WPA2 mixed authentication, you will need to change this to WPA2 PSK(AES). Newer models of iPad support WPA3.
Some Mesh WiFi Routers are known to be troublesome in some circumstances.
As a diagnostic exercise, try simplifying your WiFi network to just the Router. Be aware that simple WiFi repeaters, where used, will halve the WiFi throughput for each hop. As such, chaining repeaters is never a good idea.