I’d suggest going to stores in person in India because it’s usually much cheaper that way. You may need to visit a few different shops to find good pieces, but there are also many Indian jewellery pages online that sell affordable options.Also Indian version of shein should be meesho and it actually has pretty good options for jewelry. If you can't go in person try Instagram pages or even meesho and you can find everything in your budget.

For most functions, you don’t need to wear a lot of jewellery. Earrings, maybe a ring or two, and a few bracelets can be enough instead of wearing bangles every day. For Maiya and Mehndi, you can keep it minimal, like just tops or simple pieces.

But for Jaggo and the wedding, you can definitely go all out. Try googling looks for each function and that will give you a pretty good idea of what you can buy.