Hello, @Alex Tripp !
Azure does not support renaming resources or resource groups (although this has been a popular request) so the types of resource names that you are describing where names are based on your configuration values but have additional characters are to be expected.
When it comes to resource groups there is a bit of a workaround. You are able to move resources from one group to another so you can create a new resource group with the name you want, move your resources to that new resource group, and then delete the old resource group:
https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/move-resource-group-and-subscription