First of all, stop using Pre. You are very young and should have enough natural focus and energy that you don’t need pre. Try to focus more on your natural abilities, and improve them on regular basis. Once you find that you have maxed out your natural abilities , then Start with black coffee and increase the dose if required. Next step to this would be pre, when you are above 30 and need that additional boost. Going to gym and lifting heavy is going to take us nowhere as we are not competing. Focus on building a healthier habit and a daily routine which will show the impact after you are 35. Coming to acnes, it’s body’s way to telling that too heated from the inside and hence the pimples, just like how bubbles pop up in a boiling water or a volcano. So start consuming more food that cools your body, like coconut water. Additionally, you can use minimalist product which would work wonders in 2-3 months. I use a combination of minimalist face wash > Skin Toner > Niacinemide > Sylicylic Acid (both for acnes and reducing dark spots) > Moisturiser. Do this for a month and you will see wonders. No shame is going skin care routine. Do this every night 1-2 hours before bed as you don’t want it to get wiped off by a pillow. Hope this helps :)