acne ☹️

I’ve struggled w/ acne for about 3 yrs now. I’ve tried everything!! YES, I WASH MY FACE & I ONLY DRINK WATER! I’ve been to a dermatologist & the products he prescribed for me didn’t work at all. I recently cut out sweets & bread (I’m trying to cut out dairy, but it’s sooo hard). I don’t know what to do anymore. It makes me have low self esteem .. I feel sad all the time because of my face. So does anyone have any suggestions to help me out?