I am not detached, Pack19 part4

[Traveler]

for them I need to avoid all conflicts and suck up my pride.

I doubt anybody here told you to "avoid all conflicts". We may have suggested you stop arguing.

W I am sorry you got covid and could not enjoy them for longer, but I cannot compromise my holidays with them for you. I am not here to do any more sacrifices for you anymore. Should I let them stay 1 or 2 days more??

E.g., "Sorry, I have plans already and will stick to our schedule." is light years better than starting an argument about how much you've sacrificed. Make a decision. State it. Move on.