"It was the first time I was on television for a long time and I just was worried about what people were thinking about me," Bieber told the host of his Jan. 29 appearance on the talk show. "I did a lot of things over the past few years that I'm not proud of... I was just nervous to be in front of people again and talk in front of them... I thought I just looked really extra nervous and I kinda just wanted to explain myself."
In a video Bieber shared after his visit to Ellen last week, the 20-year-old apologized to fans for the seemingly "arrogant" and "conceited" way he's "been acting [in] the past year -- year and a half."
"I felt awkward up there, I felt like people were judging me," Bieber says in the clip. "I'm not who I was pretending to be."
On Thursday, the "Boyfriend" singer told DeGeneres he "wanted to make the video to just let people know that [he's] human."
"I love people, I love love, I'm passionate about things, and I'm passionate about being better and growing," he said. "I think that this is going to be an awesome chapter in my life and I'm so glad that I have you guys supporting me."
Bieber released his third studio album, Believe, in 2012 and a compilation album titled Journals in 2013. Last week, Bieber shared a video teasing new music on Instagram.