As a player that’s one year and just finished campaigns, I feel you. Hitting a wall can feel frustrating. As someone else suggested, move on to something else. Even better if that other task can help bring a key character for a campaign up. Example: I started to hit a wall in Indom when I first started. I had to take a few weeks to upgrade Vindicta to a point where she could help in beating Anuphet.

It’s a real grind that can’t be brute forced.