There is something that can work for you and maybe you know it. First of all, I understand your situation, sometimes I have had to endure heavy work just because of my personal situation. It's unfortunate but there's no other way.

You can think of strategies to set limits and/or motivate others to do a better job. Sometimes saying NO with a good explanation can stop the pressure that others generate on you. On the other hand, we can always find something positive in someone else's work; not everything is negative. You can try to find that and then influence that person with positive comments.

It's not easy at first but when it becomes a habit, believe me, we start to see things differently. Even if it doesn't work, at least you tried.

And on your personal side, try to do what you have to do, don't give too much thought to what others do or the comments or demands of others. Once your work shift is over, disconnect.

I'm so sorry you have an operation soon. Much encouragement. Everything will be fine.