These anti-Google discussions come and go on the front page of Hacker News, but I'd be curious to know how many people actually degoogle their lives drastically after reading such discussions and articles. I believe it's more of a case of "Oh my god, Google is so disgusting! Shame on Google!", and then people open up a new tab in Chrome to search on Google about their next restaurant destination as if nothing happene…
I now use Fastmail with my own domain and I love it.
I also use Firefox which is pretty much back to being the best browser after around a decade of falling behind Chrome.
For search I use DDG but I often find myself doing a '!g' search for local information such as restaurants/maps.
Chat I use a combination of Telegram and Whatsapp (but this is dependent on what other people use).
I use OneDrive instead of Drive (I get 1TB thanks to the Office family plan), which is ok.
I still use an Android phone as I find iphones to be very frustrating to use , especially if you do not use a Mac.
I think the two big unbeatable ones are Search and Maps. No one is able to even remotely compete on those two but I think that's ok. We have to go back to a world of diversifying the software we use and stop companies from forcing us into a single ecosystem.