he got me to sext him

So I kind of did it prove a point i fancied him and I didn't really want to sext him! but I did, which was my fault but he started doing it in a very degrading way, was never happy with any pics I sent., always wanting to push it further but kind of prasing me for it which was like manipulative in a way, in the end was not even interested in me as a person. What was this all about?

Do guys like him just do it to feel sense of power, why did I feel so connected to him and not see I was being made a fool of. Why cant guys like hum be happy with porn, why humiliate someone (even though I know I did willingly).

I am fully aware of this stupid it was and all the risks but just want some advice