I'm not sure there's an easy way to port everything (few services integrate across so many fields as seamlessly as Google does), but this Reddit post has a huge thread of alternatives to common Google services: https://www.reddit.com/r/degoogle/comments/g1yu01/google_alt...

For me, I've switched to DDG full-time for search and I'm veeery gradually swapping over to Protonmail for email (using Thunderbird as the client to ease the transition). Once email's over, I'll be able to rest a lot easier.

However, if you're a heavy Docs user, NextCloud is a Google-like suite with a few hosting options (self-hosted, third-party host, or enterprise).