Katy Perry is relying on support from her close circle, including Prince Harry and Meghan Markle, as she faces mounting pressure over her upcoming tour. The pop star, 39, is preparing for her highly anticipated tour, but slow ticket sales in several cities have added to her stress. Following the lukewarm reception of her latest album, 143, released on September 20, 2024, Perry is reportedly feeling the weight of fan disappointment. A source told…