25 minutes ago, jackdemha said:

How do I get rid of these and what's the cause for them?

It is caused by the acne bacteria, hormones which in general makes your skin creates more sebum. Too much sebum (oil) will clog your pores and create pimples. 

Many people sweat a lot during puberty, which clog the pores even more.

The good news are that your pimples are not bad at all. You just need some Benzoyl peroxide at night, with some AHA creme on top of it.
Remember to wash your hair often too. Use cold water to wash your face and not warm, and avoid long warm showers (it will open the pores too much and cold water will calm your skin)

And the last important thing. A good daily moisturizer. 

Thank you so much, but won't a moisturizer clog my pores? I have a Nivea creme men that I usually use for moisturizesometimes

What products would you recommend btw

For the moisturizer I would use non comedogenic cetaphil or cerave lotion. cetaphil will be oilier. I use cerave on my face and cetaphil on my chest. Just make sure whatever moisturizer you use is non comedogenic. Non comedogenic shouldnot clog pores.