Endgame loot what to do?

Hey, im new in this path of exile universe and after playing the poe2 early access a lot, im a little bit confused:

Im lvl 91 now and can easy beat t17 maps, but dont know what to do or how to Progression even further.
I ran map after map, double corrupted - but 99% of the loot is trash. Nothing to sell. How can i make currency? Yeah i can farm but I thought it would be fun to loot and sell stuff, get rich and so on. What do i wrong? Should i craft something? I tried to put orbs on white, blue or yellow items but even then, Nothing good to sell.

How can i get good items to sell? What is the right way, how can i craft good stuff? It feels like i ran map after map and dont know why. Yeah i can lvl up or Pick up all the stuff for the breach, Ritual, Delirium Boss, but there is no hype or Dopamin while that, because there seems nothing to find....

Can anyone help me with this?

Level 75 here. So what you're saying is that it doesn't get any better but it does get worse. Great. :(

Yeah, but maybe i make mistakes and dont understand wich loot is worthy and how i can make it worthy. Most times i throw some orbs and cross fingers, but there is almost nothing to sell