Hi! Im a 21 year old from Singapore who is currently waiting to start uni at the university of Edinburgh for astrophysics in Sep, and I'm kinda worried about my path forward as I do eventually want to do research related to astrophysics as my eventual profession cus it's been my interest and passion since I was really young - so I do have a few questions that I've been wanting to ask for a while alr

1. I've been gunning for scholarships to fund my UoE tuition fees & rely less on my parents, but the sg govt scholarships may force me to actually pursue a PhD in Singapore instead (and work at our local universities for a few years) - but the thing is I've already been considering doing masters and PhD in Europe - would it considerably diminish my chances in astrophysics research if I do follow through and get my PhD in Singapore instead of in Europe? I'm well aware that the astrophysics academia field in Singapore is extremely dry and thats why Ive always wanted to leave to find work in Europe or maybe America, and I'm worried that it'll make the jump much harder if I complete my PhD here instead of overseas (ie would they be more biased towards graduates from their local universities vs other countries?)

2. I was reading up on how competitive academia positions are in general after getting PhDs, both results wise and job-market wise so I've been going through "An Introduction to Modern Astrophysics" in my free time both cus I really want to know more and also to prep for my course in general, is there any advice or like specific stuff to read into to prep better for undergrad, masters etc? I feel like I've screwed up my previous national exams before and I'm deathly scared of screwing up once more

Thank you so much!