So i just arrived to irithyll dungeon

Where do i go now i've just arrived here in the hope to fight sulyvahn but it is really hard right right with the current stats so i was hoping to explore some areas and came here how should i proceed ahead

Where do i go now i've just arrived here in the hope to fight sulyvahn but it is really hard right right with the current stats so i was hoping to explore some areas and came here how should i proceed ahead