I've been with Google since the gmail beta and have slowly de-googled a lot of the stuff I use. Not due to privacy concerns but simply due to them cancelling products or making existing products worse (gTalk/Hangouts closure as well as Google Photos/Drive decoupling were the two big ones).

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.