So on my journey to step away from the BigEvils (Meta, Google/Alphabet, Microsoft, Adobe) I have looked up de-googlefied browsers and downloaded two. The ungoogled Chromium had an icon I really didn't like (is that the Chromium logo in 'Internet Explorer'-blue??) so I haven't even set it up yet.
But I did take some time to set up Vivaldi (which took me a not unimportant amount of time!) and have used it a bit yesterday. Of course, both are a bit inconvenient because I actually have Firefox set up with a profile, and regularly use the "tabs on anothe device"-function. But since I want a browser for data safety reasons, creating a profile to get these features is not an option.
Instead I am going the "uncomfortable" route of needing to either KNOW my passwords (unsafe because one tends to choose simpler passwords this way) or have it stored somewhere offline (also not the safest but possible).
So I not only got myself some browsers, but I actually think about having three browsers with various safety levels for different browsing behaviours;
unsafe actions; i.e. watching youtube videos, listening to radio, reading the news. This one has a lot of ad blockers but little safety standards set up.
regular safety; i.e. anything that gets potential access to my computer like photo editing of locally stored files, downloading music and files, etc. This has adblockers and more safety regulations, like storing passwords is okay but third-party cookies are blocked and such.
safe browsing; i.e. e-banking (where it's not its own app), threema web, etc. Basically anything that needs a verification of my personal data. This one gets heavily secured, with no password storing, no browsing history, heavily adblocked and no java (not sure wether that's possible but we'll see), etc.
This seems like a huge thing now, but once it's set in place it should actually work pretty neatly.
I currently use two browsers (Firefox and Brave), of which one has no passwords stored whatsoever and I simply take them from the other browser if needed. This is still unsafe though, even if it's "only" my tumblr-logins (which has stored all my logged in devices with browser, OS, location and "last seen"), so I'm going to take some responsibility and change that.