Need help for kp ,body pigmentation and back acne .

I have been suffering with kp since childhood, even before I started to shave . And I have random hyper pigmentation and i have back acne .

Currently I use an exfoliating glove with dove soap , at the end of my shower I apply some benzac wash on my back , ass and inner thighs. After shower I use the asaya knee elbow and neck pigmentation cream on my hyperpigmentation areas then use 20% urea cream from body wise on my arms , back and thighs and normal vasaline yellow moisturizer on the rest of the areas. I have been doing this routine for 3 months but the routine is getting expensive. Are there any suggestions for making it cheap and a better routine. I feel like the current product ain't really helping a lot.

Plss help I just wanna feel confident. 😭😭