i have done 1 and 2. 3 they make more difficult since you meed a google account for the playstore, unless you run the aurora store on some alternate OS. Fdroid is my spot for many apps, but sometimes for work I need access to Playstore apps
Yes, it meant exporting out of google and uploading to folders. They have slowly been releasing new apps as the years go on so I'm hoping for a full sync app for galleries to their drive. in the meantime a selfhoated immich server is the answer to the Gphotos functions.