how to identify a witch

Salam,

[How does one identify a witch, as accusing somebody even though they may be a suspect is a grave sin]
Like is there some rules? for example everybody will be nice but how can one identify or stay clear? like say somebody goes to jamat, or does zikr, or come to the mosque frequently does that rule them out? should we stay clear from the ones who have hasad - like if someone does not feel happy when you tell them some good news? but that could cause paranoia as that person is genuinely happy but just shocked at the good news.

A - one can do istikarrah and find out
B - stay away from the ones you see in a bad dream
C - show love to everybody as everybody is innocent in the court of Allah without any evidence and circumstantial evidence is not counted.

I was asked to avoid A as finding out there is no benefit. was told instead to pray salatual hajjah for protection and help. B i'm not sure as the dream could be a devil dream? or a trick from the witch to push me to somebody else? so i think C as they were only the means of the sihr as it was prescribed and decreed and only Allah can cure.

Your input would be great

Jazakallah

ADVICE FOLLOWS:

I heard that they have backward facing feet, and that if you see one, just take of your pants (and underwear) and run as fast as you can.
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I heard about the backwards feet thing too, and that they reside in the deep woods. my friend's relative (an elder) apparently saw one, and it was following him but disappeared after he recited ayatul kursi or some other dua.

but I didn't know witches existed, just jinns and shaytaan.
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It won't necessarily be ineffective. I know my mom told me about "beggar" magicians who will steal your money with magic if you give them money. But they can't do the magic if you make the money touch their hand when giving it to them. We don't know how magic works so we wouldn't know why certain things work the way they do.
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Or, it could be that one guy did that and the witch stopped chasing him and now they think that that's a thing
yeah, I doubt witches exist too since there is no Islamic talk on it at all, and I don't think they're mentioned in the Quran.

But I wanna test it out though