BEAUTY EXPERTS;please help me with my foundation:)?

I am a 13 year old girl. I am white, if it helps.
My complexion is normal with a few random pimples. I manage to keep it clear most of the time. My t zone can be oily at times. My main problem is that my color isnt even, like there are random places of reddish skin. I want glowing skin that is all the same color.

SO, I am asking for foundation. I have never used it before. I dont know weather to use powder or liquid, or maybe tinted moisturizer. I want light coverage, no cakey masks!

I want to know what brand/kind you use and what kind you would reccomend for me. I dont mind anything under $20. I would like a good quality product.