I managed to set up private self-hosted versions of an email client, photo viewing app, and barebones alternative to Docs and Sheets. Switched from Google to Kagi, and Chrome to Brave, but generally keep my own bookmarks of sites to use rather than using search engines.
I still run a skeleton Pixel, but the storage is almost exclusively just a very limited range of apps I use. I managed to get Google One storage from about 700GB to about 700Mb over the course of the last month or so.