What can I do when I see passengers without masks on my flight? [closed]

Yesterday, I was on an international flight to Germany with WiZZ airline. Prior to the flight I received several email reminders to wear a mask in connection with COVID19 epidemic situation. I certainly adhered to this regulation even though I am fully vaccinated and my kids have negative COVID tests. But many passengers aggressively refused to do so. Moreover, they completely ignore the request of flight attendants to wear a mask. What can be done to make the flights more safe?

At first, I was thinking: maybe these people are right, when there are strict regulations on who can board (vaccination or test) the masks are redundant? But it cannot be true, there are categories of people that do not need tests (children below 12) who can still carry the infection. Also, as we all know tests and vaccinations are not 100% effective.

May second thought was, one should wear a mask even all other measures are 100% effective, just to show solidarity and adherence to the law.

I also think the WiZZ airline, being a low-cost carrier, has no interest in implementing any COVID measures because they increase the cost. Therefore, it is unlikely they would do anything in response to my complaint.

But what can be done then?