That's a lot of engine failures. It's hard to find a common mode here, other than they're Boeing, which is next to meaningless; the engines and airframes are all very different.
Still, it's hard to overcome instinct. "Once is happenstance. Twice is coincidence. Three times is enemy action."
(It's a quote from Ian Fleming; I'm not suggesting any sort of 'attack,' only that some common mode phenomenon could be in play)
We get 4 or 5 and we're going to have to look at this really hard. If I had a gun to my head when asked what is going on I would speculate that perhaps these engines need more scrutiny before returning to service after a long COVID-19 hiatus. But then I don't actually know if that was even the case for any or all of the engines involved.