"The end doesn't justify the means."

A quote that's applicable to you OP. I know that you just want to help your friend, but you did it the wrong way, and even though you are doing a good thing, you're doing it in an unethical way hence, banning your account. Sometimes, we only feel regret when we experienced the worst thing possible, and with this one, it's a permaban.Let's say they will unban you OP, what about those who got banned for plagiarizing then? There's another way for you to help your friend, and that's through donating the money that you've earned, and not through this one.

The intentions are there. The empathy is there, but you did it in an unethical way. You said that you've regretted it, and I guess you just need to live with it. Hoping for the best for you OP, but like what others said, you deserve the ban.