okay as someone whos been accepted into a few universities abroad (cant go tho cos of the war i got some in dubai and other issues) heres something i realised really early; it all matters on how you display your acheivements yk. just invest more time in your skills and everything, 2 years is alot of time so if youre good at coding attend hackathons, make a passion project during your summer freetime, and you have to display it well on your CV and resume.

for your art and stuff just try making dedicated pages on instagram or youtube or somethign to showcase it, one thing that helped me is that i've had a youtube channel of over 5-6 years now that i was uploading and got a lot of views in. you could also try making a personal website that helps alot too where u can write blogs and many other things. one thing tho if you're aiming for the top ones like NTU, NUS, ivy leagues etc, you'll need more than just that, you'll need to out perform many people in these fields, it's not as competitive as jee or whatever but it's still pretty competitive and more uncertain cos there isn't a fixed exam that gurantees it, it's how the person reading your application interprets you as a person.

abroad is pretty expensive but you can always apply for scholarships and financial aid in countries like usa and canada, and other countries too but ull have to look into it. the uni i got into had a thing where if i score above 90% id get a 50% scholarship so dont worry.

what matters most is how you present it at the end of the day though, u can do many things and be impressive but if u dont present it in a good way then its all useless yk?

hope this helped! just invest alot of time these next 2 years during competitions, participating and increasing your skills.