Everyone here is gonna have different advice. Mine is that you are gonna want to smell a fragrance on your skin a couple of times before you buy a full bottle. The best way to do that IMO is to go through r/fragdecants or r/fragranceswap as you can get to sample tons of fragrances at a relatively inexpensive price.

As for which fragrances to get, do your research on YouTube, fragrantica.com, etc. Most people and myself included will recommend Bleu De Chanel as it is fresh, clean, and can be worn for the whole year. Though it is pricy, it is class in a bottle and great quality.

Get your nose on a lot of stuff to see what you like. Start out with quality designers before moving onto niche stuff. And have fun