I’m really sorry If this is not the right place to ask but I looked hard and long for answers but couldn’t find any ..

Confused about scams

I’m genuinely confused about why people do the following: 1- ask for d*** pictures? Like what’s the point? Why is this a scam? What are they gonna do with it? 2- ask for body pics with face? Why? What do they do with the pics ? 3- have you go on cam while they don’t turn on their mic or cam. Like they record you ? Then what? What do they do with it ? 4- tribute. Like even is that ? Why ? What do they do with it?

I know some answers will be that they will use it to extort you , but what if you don’t show your face ? Because some don’t mind if you don’t show face.

Are there other types of scams that one should be aware of ?