If you're on Android, that's probably the most important thing to consider first. Just using a phone with Google Play Services gives up a great deal of privacy, even if you think you've turned all that off.

So, consider either an iPhone or if you're really serious about this shit, GrapheneOS. The iPhone is easier for average people, but GrapheneOS is more private and you have more control. Both are better than Googled Android.

For a Google Drive alternative, that's simple. If you're already using Proton, get ProtonDrive.

For Google Docs alternative, that's a bit more challenging. There aren't any direct competitors with full end-to-end encryption that are any good and also cross-platform.

If you don’t have the time/interest in setting up NextCloud, CryptPad replicates a lot of the functionality of Google Docs/Drive, though to get more 1GB of storage you will have to subscribe.

I would recommend Proton suite and Skiff Workplace

Do you still use Android? I don't feel like I can genuinely be off of Google until I find a way not to have them in my phone. Apple isn't much better, especially for the featureset sacrifice

If you can afford it, make your next phone a Google Pixel and put GrapheneOS on it. Despite the phone being google, all the google crap will be removed by the OS.

Nextcloud self-hosted to replace Google Drive.

Install as many apps as possible from F-Droid and the rest via Aurora Store.

Now where do I start lol, I've been on this journey for a few years, and I'd say, take it one service at a time!! I'll try and list most of my apps/services etc.

Phone running grapheneos

Browser - vanadium (graphenes hardened browser)

Maps - organic maps

Mail - protonmai

Calender - protonmail

Notes - standard notes

YouTube - newpipe

App store -F-Droid

Messaging - signal and threema

File sync - syncthing

Password managing - bitwarden

Gallery - simple gallery

Camera - stock grapheneos camera

Ad blocking - 2 piholes setup

And one of the hardest was google photos..... Overcame that with self hosting photoprism..... I have syncthing sync my camera roll to a hard drive attached to one of my raspberry pi..... 3am it rsyncs to a permanent location, than rsync to another hard drive, than have a script that adds it to the photoprism library an hour later, sounds hectic but perfect once setup....

And if you want to go even deeper and not use google or any other provider as your DNS, if you have a pi or any other computer running 24/7 can run your own recursive DNS resolver with unbound..... Hope this helps some people, may have missed a few 😂

If you are already using proton mail, there is proton drive. For docs… maybe Libreoffice, or Cryptpad or any selfhostable options?

Another vote for CryptPad. Very polished and nice to work with.

Moving to China is probably the easiest solution.

There are a lot of good suggestions here. Just to add on to it, I have been using Skiff Pages as an alternative fog Google Docs for a while now, and I have been happy with it. They have a better UI and feels less clunkier than CryptPad. They also offer couple of other services such as Drive and email, which you can check out as well.