My habits are mixed; it depends on the scenario. I tend to balance privacy with convenience. For example, I have a discount through work for mobile phone service. Technically, it's a company account to get the discount, which means the company has access to the account. But practically, we have too many employees for them to care, so I believe them when they say they won't access it except to find me if I skip out and don't pay.
For browsers, I use Firefox personally and Chrome for a few NPOs that use Google Workspace. Though I might switch back to Firefox for those, too. I use VMs to isolate the NPO stuff, and Chrome often crashes in a VM. I use VMs because my volunteer work is pretty heavy duty, technically; application adminstration, bookkeeping, etc. Lots of logins and accounts and what-no that I don't want to get mixed up with my personal stuff. My laptop runs Fedora. It used to be Debian, but some rando change they made set me off one day, and I quit it. It would be FreeBSD, because I'm nostalgic, but I can't find a decent laptop that works well with FreeBSD. I have a Yoga 6, which is almost there; just waiting on support for the Wi-Fi card, which is actually being worked on (yay!). I tried Qubes; it was neat, but the laptop is not beefy enough for it.
At home, I have two boxes running FreeBSD and a router running OpenWRT. The Ethernet and Wi-Fi networks are isolated, and I use Wireguard to connect to the boxes on the Ethernet network, even when I'm on the home Wi-Fi. This was more because I wanted a fun project, and also a bit of a convenience factor: I don't want to toggle Wireguard on my laptop or phone when I come and go. [Side-note: Thinking about this sent me down a rabbit hole, out of which I came with a better Wireguard setup. I had issues on the phone when changing networks, and realized it was DNS. So I fixed it, and now I don't have to restart the VPN when I change networks! Yay.]
I run Nextcloud on one of the BSD boxes; again, only accessible via Wireguard or Ethernet. I made it public once just to try out Nextcloud Social, but as much as I want to like the app, it's still a bit of a mess. I don't think is has even been updated to be compatible with the latest version of Nextcloud.
In addition to the machines at home, I have a low-rent VPS running Debian. It would run FreeBSD, too, but it was too much work to figure that out with that particular provider. It was also cheap enough that I didn't care ($23 a year or something). I use it to host my email, Postfix+Dovecot+Postgrey with regex aliases for unique email addresses for sign-ups, etc. Again, more fun project than paranoia. But honestly, I don't like giving random people my actual email address; even humans I know and like send me junk mail. I still have Gmail as a throwaway and because I have an Android phone, but I'm slowly moving things over to my other email address(es). I wouldn't mind switching to something like a Librem 5 or a Punkt MP02, but the convenience (not a requirement) of workplace apps keeps me on a mainstream smartphone.
As for storage, mostly Nextcloud. The laptop disk is encrypted, but I don't do disk encryption on the BSD boxes. I need them up and running automatically after a power outage when I'm away. The router also has some external storage, mostly for music and movies (via minidlna).
I try to stay away from too much social media. I quit Twitter before quitting Twitter was cool (long before Musk was even considering buying it). I quit Facebook before the pandemic, then rejoined during the pandemic. I figured if the world was ending, it wouldn't matter. Sadly, the world did not end. I'm planning my second exit from Facebook.
For me, privacy is less about what I need and more about, "why do you need this?" The answer is usually, "you don't." I will turn off location services for apps that don't need them. I once deleted my bank's mobile app, because it wouldn't let me log in without turning on location services. I get it, you probably want to show me where your branches are or something. Hey, guess what? I work for you, so I know where they are: Everywhere I don't live. I complained, "our competitors don't do this." They fixed it, and I downloaded it again once they stopped requiring location. I do similarly with other mobile apps; unless there is a clear need or convenience, baleted.