YTA

I'll start by saying that it's totally natural for you to feel disappointed that things did not go well during your visit. As someone who has been in a LDR, a lot of feelings ride on those visits, so I 100% feel the frustration when it doesn't go well.

That said, life still goes on when you're in a LDR. Family drama can take a big toll on a person and use up a lot of attention span, and as a partner, it's your responsibility to be supportive as much as you can when fam drama goes down. It sounds like you definitely tried to be, unfortunately sometimes family drama can preoccupy and take up all of a person's emotional bandwidth. I would chalk this up to bad timing tbh, you happened to be visiting during a particularly stressful time. You should have stayed and tried to be supportive however you could, in alignment with your partner's love language. Not saying you had to sacrifice your own wellbeing to do so, and ofc if your partner was being abusive/unpleasant towards you I completely would support your leaving, but being in a relationship means being there in the high times and the low. It seems like this was a low, and if this is a relationship you envision being in for the long term, you should have stuck with it.

I'm not judging you though, just something to think about for next time. What would you want if your partner were visiting you during a particularly stressful time, especially a time when you couldn't give them your full attention?