Hi,
To get the Latitude and Longitude you can use in a Workbook the Sentinel geodata api (use SRM rather than Logs - see below). You need to pass certain fields to the api - see below. This allows you to select an IP in a previous Grid and them get an answer.
/subscriptions/{SubscriptionID}/resourceGroups/{resourceGroup}/providers/Microsoft.SecurityInsights/enrichment/ip/geodata/?ipaddress={ipAddress}
You can then turn the Grid output into a Map
The other method will mean you need a lookup file (.csv) with the data or access to a service like RiskIQ, Greynoise etc... for both you can do an externaldata() lookup.