Water: drink 3-4 liters of water everyday.
Moisturize: in morning use moisturizer& in night use alove vera gel.
Exercise: you need to exercise which relaxes sweat, which help in cleansing the pores(5-10 minutes Before shower).
Vitamin c: add 1-2 tomatoes to your lunch, you can also eat oranges which are good source for vitamin c. Example:https://extended-alpha.com/products/vitamin-c-serum-for-face
(10% off code: extended10)
Cleanser: clean your face with a good cleanser/moisturizer. Example: https://bit.ly/3NHq3Jj (10% off code: extended10).
Some more tips: avoid sugar, exfoliate your skin, eat less junk food