ubersecure not sure what you mean.
What I mean is that your habits and routines are much more important for increasing privacy. For example, you don't have to store your private data in the cloud - even if it's encrypted. Instead of a NAS at home, you can simply use an encrypted (offline) drive. Instead of a calendar or notebook on your phone or computer, you can use a simple paper calendar/notebook. Instead of a payment card, you can pay with cash more often. You don't need an email app that checks for email every few seconds. You won't lose much if you check your email once or twice a day. You don't need five messengers and dozens of apps on your phone - uninstall what you don't need and cut off network access to apps you need but that don't require constant internet access (grant this access only when using the app). You don't need a colorful page in your browser - set up an RSS/Atom reader (like Briar) instead and download only the information you want to read (without any JavaScript or images). Similarly, block JavaScript by default in your browser and only use Vanadium (despite any ads and recommendations for other browsers).
Qubes is fine, but you'll gain more if you implement hardware isolation. For example, I use a Punkt MP 02 as my phone. This phone doesn't have a Play Store and can only install one app – Pigeon, which is a modified version of Signal (okay, there are three to choose). This phone is only used for calling family and friends who have Signal. I can also receive text messages. I don't do anything else on this phone. Is it secure? No. But even if I will use GOS, it wouldn't improve my security in any way. This is because most of the people I might talk to have their phones loaded with Facebook, Instagram, and other risky apps. So, the Punkt isn't a secure phone, but it still seems more secure than the phones of the people I might talk to. I accept this risk and don't use this phone for things that require more security.
I also have a Pixel Tablet+GOS, which is always at home. It has everything connected to my ID: email, banking app, NewPipe, etc. I check my email manually. I don't use it for anything else. Finally, I have a Pixel 9 Pro with GOS, which is my trusted phone. It's Wi-Fi only (no SIM)+AirPlane. I have a few apps, and most of them are offline. No email. No banking app. I only have one messenger (SimpleX) and Briar as an RSS reader. I only use this phone to stay in touch with people who understand my approach and also have a dedicated trusted phone.