I would say a Money related Niche as you can adapt it for when people are going through a tough time as we are at the moment but also you can then adapt it to when the good times start to roll again so its a win win Niche really.
There's some money in fashion and beauty for women.. but like the other people said, go with something your truely interested in.. It'll make you more motivated in writing your content.. writer's block free!
These are some profitable niches, health , technology, laptops, insurance, debt, credit cards, seo , web hosting , marketing . But they are already crowded specially health niche. I will say get one abt credit cards or insurance