If you enjoy the server, I don't think leaving outright is the option. I would heavily consider not dwelling on this situation any longer, or why people aren't forgiving you for it. If you boil it down, there are two main reasons people are not forgiving you: the first being that your apology was not seen as sincere, the second being that you continue to bring this up. Both of these reasons are connected. After getting your mute reduced from permanent to a few months, you decided to complain about the punishment and create a timer plot that ended when you were unmuted. All things considered... this makes your apology seem quite hollow. As the point of an apology is to admit you were in the wrong and attempt to make amends for your actions: if you didn't believe you should've been punished, you're kind of missing the point of an apology. Now, just because you acted stupid in the past doesn't mean you can't be redeemed, we all make mistakes. If you move on from the incident properly (that means knowing what you did was wrong, and being able to not need to bring it up again), and prove yourself to be a genuinely cool person within the community, people will forgive you.
TLDR: Admit you were in the wrong, be active within the community again, make cool games, be nice to people, and people will forgive you with enough time. An apology alone won't make everyone like you again, you need to show with your actions that you are worthy of forgiveness.
i forgor