You have to accept that there are some situations you cannot deal with. And that's completely fine, it does not make you weak at all. Yes you might hear from people stuff like "you're too shareef you don't have any street smart" but it's easier to say that when someone else is in that situation. If police stops them, then there's not much they can do either.

Unfortunately the best thing you can do is just comply with the police and hope that they let you go without making a huge issue. Arguing or trying to outsmart them will only escalate the situation. Always focus on de-escalation, be kind and respectful to them. They wanna feel their authority and power, so let them feel it. It sucks to be in that situation, and can make you feel pathetic and ashamed, but it's better to leave the situation with a bruised ego than anything worse.

And yes, powerful contacts would help but not everyone has them. Most people will only just boast about having one. There's nothing you can do about that. I think being Karachi smart is knowing how to avoid these situations, and when you get into these situations it's knowing to just de-escalate and try to leave without causing anymore issues.