[routine help] and [product request] dark spots

ok so i have small dark spots almost everywhere on my body (mostly my back from bacne) and i am honestly so heavily insecure about it even though im already using products to help including turmeric soap with kojic acid and also changing my whole skincare routine like sticking to exfoliating once a week, drinking more water, moisturizing, and im even starting to take vitamin c supplements to help with these spots but i’ve heard it doesn’t really do anything. also i literally have dark spots from MOSQUITO BITES that are taking ages to fade. yes i know im not alone in this and other people have struggled with it too but i really need advice on how to treat these before summer and maybe some product recommendations but not too expensive. thanks