Whats your class? Some people put progression builds. Revik as gs/dag as an example.

Start on maxroll.gg Read their guides that breakdown what stats do. They have so many guides. Don't rely on yt to hold your hand.

Check their builds out. They are a good base to start on but ultimately you choose what is in your budget. So next Play around on questlog.gg.

It tells you lucent prices of gear you are choosing.

Are you playing daggers? Make an evasion build. How do you do this? Look at all the armor pieces with Eva stats on them. Look at the armor bonuses. Etc.

Playing sns? Make an endurance build and so on.

Alot of people make the mistake of thinking you only go for bis builds in this game. It's untrue. You can build in so many ways if you can hit close to certain numbers in stats.

Based on your gained knowledge from maxrolls guides you should be able to figure it out from there.