He told the ABC he initially taught English but made a propaganda video after he fell under suspicion for being a spy.
"I actually did regret making that video and I know the output was not good for my part but I'll know I'll probably spend time in jail for making that video," he said.
"I was helping to guard a border between Syrian Government...I had a Kalashnikov," he said.
He only used it for practice, he said.
He was also put in prison by Isis for a "ridiculous reason".
"Because I was accused of drinking alcohol and making alcohol and smoking hashish," he told the ABC.
Taylor's other regret was not being able to afford a slave, he said.
Asked what he would have done with a slave, he told the ABC:
"Clean the house, the thing is it depends on the function of the slave. For example, if my wife owned the slave I had no right to the slave whatsoever but if I had ownership of the lady then it basically entitled me to what I wanted her to do as long as it was within Islamic Sharia."
He said he would not force the woman to have sex with him, he said.
"More like a boyfriend, girlfriend relationship."
But because he couldn't afford a slave, he had to stick with his Syrian wife, he told the ABC.
Isis captured several thousand Yazidi women and girls in 2015 and began trading them as sex slaves.