I get it, but I want my old account back. There has to be a way to do so.

You lost that account, that's the cost of cheating. Not trying to be rude, that's just the truth of the matter. You seem to have learned from your mistakes, which is the only reason I'm even saying make a second account. Unless Bungie decides to unban an account that they verified was cheating, your account is done. Could you imagine if Bungie just unbanned people because they want their old account back or every time someone said they learned their lesson? It doesn't work that way, actions have consequences.

I get it, but like I mean, we grow as people and I'm not the same anymore, its been so long and I get it some people cheat to get an unfair advantage, I just wanted to complete a quest and let frustration get the best of me. so yeah, cheating is pretty inexcusable but I miss my account and will try anything I can to get it back

I can't blame you for trying, I just don't see it happening. At least you learned from everything, that's kinda best case here. Best of luck, and play fair.