I spent Sunday afternoon researching alternatives for Keep after hitting my breaking point with DontBeEvilCorp a couple weeks ago.
The best I found by a mile is Notion.so. In fact, it is such a great app, it has promted me to consider migrating years of OneNote notebooks, along with trying it out as a replacement for Todoist.
Google photos I replaced with Amazon Prime Photos (from pan to fire, I know, but I'm still oddly happier).
Google Drive was the easiest - I use a combo of DropBox and Arq Backup Tool going to Backblaze B2.
Email has been hard. I have always maintained my own email domain, but had that forward to gmail for the convenience. Not sure what I'm going to do there.
Hope that helped.