hello is also used in Nepali as well.
many people say hello is equivalent to Namaste 🙏 but I say Namaste is not used that widely.
Namaste is quite formal and not even used among friends, juniors and to many people. Used commonly to seniors, teacher, etc
so there are so many ways to say which are equivalent to hello
for eg. Oe plus name [ among friends and to juniors ] , k chha ? [ exact meaning is how are you but we use it very often ] .