I have been reading a lot about decentralization and not depending too much in one company in the past six months and I realized how much I relied on Google: my email, all my files, contacts, calendars, pictures... Most of my data was stored on their servers. This was inconvenient for three reasons: (1) if something was to happen to Google or my account, I would lose a lot of data, (2) Google doesn't use end-to-end encryption, which means that they (and anyone with access to their servers) can see all my files, emails, etc. and (3) Google already uses all this data (and other it collects) to better know my personality.
Some people might think that the main three problems I have with Google aren't that important. In fact, I have used Google for many years because that was my opinion for a long time. However, the more I read about the issue, the more I realize they aren't minor problems. I realized that for me it is worth it to pay $12 or $24 a year in exchange for privacy. If you are still doubting, this post might change your mind.
Let's see what I needed out of my new providers/configuration:
My first problem was easily solvable, I simply needed to back up everything that was on the cloud. That process was pretty easy using Google's export tool. With a few clicks, everything was ready, and I only had to wait for Google to collect all the data and create the file. I'm not sure how much that took, I would say less than an hour, but definitely less than a day (it was a long ago, so I don't remember).
Selecting all the different services I wanted to export from one page instead of having to go to each service's URL and then select export made the process so much smoother. I was surprised by how easy the export was, and all the data was in convenient files to import to other services: contacts in a VCF file, calendar in an iCal file... which makes a lot of sense, but not all services allow such an easy process to export everything and ready to use in a different service. Fortunately, that was the case, so my next problem was a lot easier to solve.
In order to encrypt my content, I needed to find an alternative to a lot of services that Google was offering me (or use tools such as Cryptomator, which was discarded because of problem number 3). And so the search began.
There are a lot of encrypted mailboxes and there is also the option of self-hosting email. I wasn't interested in managing my own server just for my email, so I had to choose a provider. Many of the sources I checked recommended Protonmail and Tutanota, among others. They both looked nice and offered a free tier, so I tried them. After some time, I finally decided to go with Tutanota because of how they approached their user community as well as other details (for instance, their app not using any of the Google Play Services), although it was a hard choice.
Most of my files in the cloud were old and not usually needed, they were just online because I used Google Drive as my home folder. The solution was easy: I backed them up on an offline external storage as well as on my computer and deleted them from the cloud.
As for the few files I actually needed online (the ones I use both at home and at college), I now use a USB stick to have them wherever I go, as well as backing them up every once in a while. No need to have them online, and it is faster to plug in a USB stick than log in to Google Drive and download the files (which was what I was doing on all computers running GNU/Linux).
There is one type of file I haven't replaced yet: anything that was shared is still on my Drive (even if other services offer it, for now, I am fine with using Google).
I created an account in a Nextcloud instance for my calendar and contacts. Nextcloud is very intuitive and I like the user interface. There's the DAVx⁵ app that synchronizes them to my phone, so that was an easy choice. Having an account at a Nextcloud instance is also useful in case I want to upload files and it also allows me to sync my Joplin notes.
I thought the search engine would be the hardest service to substitute, however, there are a lot of good alternatives. The one I went for is DuckDuckGo which works pretty well and also works if you are connected to the internet through the Tor network.
I never had to substitute the web browser since I already used Firefox, and as for the photo hosting service, I just don't upload them online anymore and I use the Simple Gallery app (you can install it for free from F-Droid). I also substituted Android's custom ROM, but I will talk about that some other time.
I temporarily haven't replaced one service: Google Maps. Its accuracy is so good that it is hard to match. I have downloaded OsmAnd, but when searching for public transport routes, I still check Google Maps.
When looking for all the new services in order to get end-to-end encryption, I already looked at their policies in relation to privacy, so this problem was solved as well.
It took me some time to make all these changes, especially my phone's operative system and my email address—I still use the old one with a lot of people, I am progressively updating it. Some of the services are hard to replace and it takes time to get used to the new providers. However, if you are interested in getting privacy when sending personal emails or saving files online, it is worth the change.