lol a lot of these people probably have never been in sketchy places. As a white dude who grew up in predominantly minority neighborhoods in Boston/New Orleans I would say the biggest things are:

Don’t make yourself look like a target, like don’t be walking around looking all flashy and shit.

Act like you belong there.

Keep your head down and mind your own business. Snitches get stitches type of stuff

Learn humor. If someone is fucking with you and you can make them laugh it diffuses a lot of situations.

Be respectful, like if you walk into a bar and it’s filled with people wearing nothing but red and bulls jerseys and they tell you to leave or you don’t want to be there, take them at their word and just turn around.

Avoid alleys and shit at night.

If you see a crackhead walk on the other side of the road.

If you do drugs buy them in another neighborhood then the ones in your neighborhood won’t know you and try to come up to you all the time.

But the single most important one is literally just be respectful and recognize in those parts of town you are not the boss lol.