Feeling frustrated and tired because of my cancer

Sorry for the rant. I am going through my third and worst relapse of neuroblastoma since last two years and it's been really hard,I had to move thousands of kilometres from my home with my parents to receive the treatment, initially got 4 cycles of chemotherapy which didn't work so I was switched to targetted therapy which was unaffordable and I had to crowdsource some of the money and my parents somehow managed,worked for a few months but saw progression after that and the oncologist said there's no treatment option left for me,i found a clinical trial for myself after sending hundreds of emails but it's in the US and i am still waiting to get finally enrolled in it,they keep delaying it and it's been six months. Meanwhile I am receiving multiple cycles of chemotherapy to bridge the time gap which is causing lots of complications. I feel bad and can't identify myself in the mirror. I am 27 and i was diagnosed when I was 19 and I see no future for myself,my parents are my only support and sometimes they get irritated and frustrated too. I am from India and the treatment here is frustrating and slow, everything takes your energy as a patient,even a small lab test like CBC takes hours for blood collection. I feel tired and helpless most of the time and just wish I could do something. Sorry again for the rant.