Vegeta is not bad, but Saiyans generally lack family education and acquired living environment, which leads to his lack of feelings. As he slowly entered the human society, his missing feelings came back. This feeling can't be ignored! In fact, compared with the villain boss who appeared later, it is not completely bad. Different from Felisa's desire to conquer the universe, different from Charouk's desire to be the strongest in the universe, and different from Buou's pure killing, Vegeta's goal as a boss debut is only the Dragon Ball.
Throughout the Dragon Ball series, Vegeta is actually a process from bad to good. Like Bick, he eventually became an indispensable friend of the Monkey King. The Monkey King was the first to find him, because the Monkey King was also a Saiyan. He didn't believe he could beat him, so he wanted to surpass the Monkey King at any time. That kind of pride is not something that ordinary people can have, so I feel that he is not bad. He just always thinks he is a master and can't lose to anyone.
It's kind of self-redemption. In Dragon Ball Super, Bulma was slapped by the virus and Vegeta ran away directly. Later, when Bula was born, Vegeta gave up practicing. This shows that Vegeta is not too bad, but also a responsible husband. Vegeta appeared in Saiyan's article. In fact, the whole Saiyan article Vegeta didn't kill the earth alone. He came to earth with only one goal-the Dragon Ball. So Napa gave gifts to local citizens when his mind was hot, and Vegeta directly accused Napa.