All of the above can still be used. Example, you can connect to gmail and calendar via the apps supplied by Huawei.
PureAPK can be used to update all your apps.
Plenty alternatives for things like news/keep notes/chrome.
Maps - Downloaded Here Maps(used it years ago on Nokia)
I actually decided yesterday to go on this journey to see how much I can do without google and I am surprising myself here. Don't get me wrong, I like google. Always been a user/customer of google products. I am just curious to see how bad it would be to not be invested entirely into one company. You realize quickly how much of you google run/own and this is not necessarily a good thing if they can just revoke all your "google" apps because a idiot with a wig said they must. We are placing too much power into the hands of Google and even Facebook.
APK Pure would require me to manually update every app as far as I am aware.
There aren't really that many alternatives, maybe Microsoft's News. Google's News is really good.
Here Maps has nothing on Waze, I did try it out.
In regards to calendar, yep, did it with my LG device.
My point was rather that its not bloatware if most use most of the tools, it's not a negative to have installed.