Why is it always male that is the serial killer? ?

It scares me to make friends with boys, I feel like one day maybe they might kill me secretly and nobody will know. I have been emotionally manipulated when I was very young by bunch of boys for long time and I am very glad I was able to avoid them at the right time before things got out of hand. I think that always plays a part in making myself believe that I should avoid them but it’s just not possible to avoid them for the rest of my life and I also seek boys acceptance and validation everywhere I go. so I I don’t know I need some answer please help me. I am broken with what to think
thanks
Why is it always male that is the serial killer? ?
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