Definitely don't run an unpatched browser

There's a major browser zero-day being used in the wild requiring immediate browser update basically every week it seems like.

Stay up to date or use the browser in a very safe environment in a way which does not have access to or use any of your personal information including accounts/passwords/etc.

What is it about the new Firefox you don't like? I find Mozilla makes a lot of stupid anti-user changes, but at least most can be changed someone.

Since a few months, firefox by default doesn't switch from incognito back to normal mode when I close the only remaining incognito tab. Can probably be attributed to increased privacy, I suppose, encouraging the use of incognito mode. But there's no setting to change that back. Over time, more of these minor annoyances appear which I'd need to dig in my memory for. Luckily, it's a relatively small price to pay, overall I'm just happy to have adblocking in the browser.

Check SponsorBlock extension