I have tried to redo the alerts I have set up as Rules. Now, the best result is that instead of 4 daily emails (one each for Documents, Images, Events, and Site Pages) , of all changes (added, deleted, updated, etc.) at a desirable time, I get a single real time email every time anything is changed. Some days there will be hundreds of emails, each with a single change. There is absolutely no upside to this change at all. Power Automate doesn't come close to being a viable replacement. Even if PA had the exact functionality as Alerts (which it doesn't), programming it to work as intended is near impossible, and Copilot has not been helpful whatsoever (I have spent days and days trying to figure it out and Copilot just sends me in circles with half-answers).
I beg MS to reconsider this change or at least delay it until they can provide a 1:1 recreation with instructions built for the end user either in Rules or Power Automate.