In Fable 2. I believe I manage to sell the cursed skull before I did the quest. And now I cant remember to whom I sold it.... Does anyone here have any idea how I could find it?    Would be glad for any help

Why did you sell it. You got it from Murgo in the first place, located in the area under the Bowerstone bridge, but I think the only person you can get it back from is the person you sold it to

Could it be that I wasn't strong enough for that quest and never did get the Skull? In the Knothole quest I didn't get the second quest when I returned to the mainland could that also be because I dont have enough XP yet?

I dunno, are you sure that you got it. Did you complete the snow globe entirely? Did you make sure that you didn't just quit the snowglobe, that you actually left via the portal? Check your active quests

I did finish it and left through the portal. And because I cant sell the snow globe I dont think I could have sold the skull if I had it. The snow globe quest was the first quest I did when I got to town.

Have you completed the main story?

No! I got both DLC before I started playing so the Globe was the first thing I did in the game. Hadn't even started the main quest

I would do the main quest, finish the cursed skull does lead into the see the future part (a total letdown imo) so I think you might have to finish the game before you return to Murgo

Will do that. Do you know anything about the Knothole quests? Why didnt I get the second quest after I finished the first?

I assume that is lack of story progression as well. Personally, I had finished the main game when I got the DLC, so I can't tell you precisely how far you need to be, but I don't think the DLC is the best part of the game anyway, it is actually a decent story if you just play through the main campaign