Bliss balls, made with nut butters, and coconut flakes and unsweetened cocoa if you like the chocolate taste can be a fabulous keto/LCHF way to deal with sweet-tooth cravings. They are quite labour intensive to make (rolling all those wee balls!), and expensive (all that nut butter), but when I have done it is has been worth it. Heaps of recipes online to choose from.
Also, favourite keto cake recipes - mine is a lime pound cake, but I have a very large lime tree in my back yard, as someone living in the subtropics. And I have a favourite granulated stevia product now, after years of looking for a good one that suits my body. (If you are a keto/LCHF baker - a good granulated stevia product helps hugely!)
But, I have to warn you, I love the substitute cakes - i also have a 'stoneage chocolate cake' from a paleo cookbook, made with coconut flour, and oil, that I make from time to time, maybe just once a year each, but no-one who does not have diabetes considers them to be a genuine replacement for sugary, wheat flour cake! They are not light and fluffy, and they are not sweet in the traditional sense of the word. No-one in my family or amongst my friends, eats them but me.