How can I find out if my iPhone has a virus ?

BoyFromIreland162 wrote:

I click to run certain website’s videos and it gets stuck in a loop

That wouldn't cause your phone to have a virus, there are no known virus/malware/spyware/hack for a non jailbroken phone.

The answer is simple. No, your iPhone does not have a virus. That can only happen if you the user have disabled all security protections intentionally. It’s called Jailbreaking and you have to do it. And hackers don’t play games by freezing videos in a loop. They are after your money and/or personal information they can sell.