Do you think being nice is more important than talent?

[Mutsukki]

That may be so, but my biggest concern is the people how see me as the devil, yet they are extremely respected and capable of accomplishing more than I am able to. If they reach a certain level of fame and power, they would not hesitate to make my life heck in a hand basket. I realize this idea is farfetched, but I can't be too careful. Besides, I want to have those kind of people like me to remove any traces of myself people claim as "biased" or "toxic".

Why do you think all those people would go out of their way to make your life hell...? It's not only farfetched as it's really egocentrical (which I know you acnowkledge, but you keep doing it). You can't control how other people feel. If they don't like you, they don't! If you want to change that, maybe just try looking at yourself sometimes and see what can be or not be wrong...? That's still not 100% guaranteed that they'll ever like you. Change doesn't come overnight. Also you seem only concerned because the person is "better" than you. This is wrong.

Well, I will admit that some flaws being the reason some people not liking me is a lofty assumption, so I wonder what you'll get out of some of the arguments I had with the people who dislike me. The worst part is that I don't know who is right or wrong, but I feel that I'm in the wrong almost all the time, which leads to insecurity.

Nobody's right or wrong. If you have people that like you the way you are, good! But not everyone will, and that's perfectly normal. Although if too many people (maybe including your friends) start to tell you something's wrong, maybe you should actually reflect upon that.