Acne! What foods cause it, what to avoid?

I have acne I'm 24 and just want it to go. I have to wear foundation and powder to cover it to feel confident.
I've lost my confidence because of it!

I want to no what foods can cause acne because I want to completely cut them from my diet.

I want to feel good about myself again!
Any tips or suggestions would be lovely :)
Acne! What foods cause it, what to avoid?
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