I've been using Opera for a very long time, and according to personal experience, it's 100% safe for our device. We all know that its main edge over other browsers is its built-in VPN and ad blocker feature. I have downloaded malicious sites' content and many risky sites' content on Opera, and it is always proved safe for my device. Now, Opera (https://www.opera.com) is my default browser on my mobile phone, iPad, and PCs also.