As we still use SharePoint groups ( Not just office 365 group ) , its better have Action to get all member's email from a SharePoint group in power automate . This will help to send email to SharePoint group member and other activity related to group .
Currently we can get the SharePoint group member by doing an http call to SharePoint group and flowed by few other steps . I don't think this can be done easily by a citizen developer .
Requesting you all and MS team to consider this request and relapse this ASAP .