Opera is owned by a Chinese company with a horrible privacy and consumer track record. They’ve operated a VPN where they steal your data, were caught up in a lending scheme, and more. Vivaldi, a recommendation below, was founded by the people who made Opera before it got bought, and have many of the same features. It’s still not as great as Firefox, but a drop-in replacement nonetheless.
Brave Browser has been caught doing some shady things like inserting their referral link into Amazon, and BAT is kind of a crypto scam where they insert ads as notifications to steal, I mean payout money , again I meant their own cryptocurrency to online creators. The CEO Brendan Eich also supported a bill in California to ban same-sex marriage.
Google makes money from ads and tracking users. Google Chrome is just a funnel for the ads and tracking business. All Google Chrome does is send your browsing data back to Google so they can use it to sell more ads to you. It’s a creepy, nasty business, and especially for something so vital as a browser. It also has a near-monopoly on the browser market which allows them to get away with this stuff. We need competition to Google.
Microsoft has a bad record on internet browsers and consumer protections, and I wouldn’t recommend them. But recently Microsoft has been trending in an upward direction with Edge, as a decent fork of Chromium with some nice features. I still wouldn’t trust slimy Microsoft with a ten foot pole, but Edge isn’t as bad as say Chrome or Opera.