Back when titan hm was the thing I had this issue. I posted on my world forums asking if anyone would help. I specified I did not want a carry and just wanted an experienced group to help me out. The positive responses from my world community were amazing and I'm still friends with one of them to this day. I also formed a linkshell from people who responded to my post, and met through party finder, who were willing to learn the fight with me. I didn't necessarily take the best or experienced players. I accepted anyone who was committed to learning.

If you were on Gilgamesh I'd help out. Good luck!