The parents it must be said are not chillaxing watching disney films all day, jesus christ, it is extremely hard work keeping children occupied cooped up inside all day and not able to go out or see friends - for what will be for months and months. I am sure they would rather not be in that position, and would almost certainly find it easier working as you are!!
You need to change your own mindset on this. They are NOT, I repeat having a paid holiday, within a week they will be stretched to breaking point at times, and will be alone in coping with all that comes with children unable to function normally. They may face having very sick children, or being ill themselves with CV. I would try just for a minute to imagine how hard this is going to be for them - rather than just complaining that it is unfair.
It is unfair we are all having our lives turned upside down, but being negative will not help. It will only make things worse.
Celebrate the fact you have some normality in your life, you are going to work as normal, living your life, seeing other people. Many/most of us do not have that anymore. Everything is disjointed and dislocated. I speak from experience, I am on day 8 of isolation, it is not bloody holiday I can tell you!
So have a word with your line manager, they/you all need to buck up and get on with it, no more moaning. This needs to be a team effort, and yes we are all going to feel crap about some aspect of it, but fgs be grateful you are not ill, nor dying in some random hospital all alone, and be glad you are able to live some kind of normal life for the foreseeable.
This is not the moment to be a poor me.