”我的事轮不到你来管“ literally: my business turn to you to meddle in. backtranslation: i will not allow you to get involved the business I'm taking charged in proposed translation: to mind your own business ”再怎么样也轮不到你bb“ I don't know what the bb stand for?? Actually, '轮不到' is not a polite but a bit offense. normally, we omitted two existing meanings, one is 'whatever', the other is 'the style of complaint'. people apply it into sentence for complaining 'you have no right to meddle in my business no matter how you are good at it or perform better than me OR who do you think you are to meddle in my business, I don't need your help even if I get in a trouble (a bit jealousy and childlike) 轮不到+ someone= (who do you think you are), therefore, apply to your sentence provided above, ”我的事轮不到你来管“ hope it helps

I think both have the same meaning, when you want to / are doing something, someone just wants to stop you doing it, and then you may say: It's my own business, you don't have to tell me whether its right or wrong, but you might feel so angry when you saying it. As you posted samples above, the only a little bit different is the level of the angry feeling. The first one is lower than the second one.

輪不到，除了表示"排隊"與"值班"的順序上未到，之外還表示沒有資格、立場 "輪不到某人"的duty，"輪不到某人發表意見，輪不到某人教訓別人，等等

In everyday speaking, '轮不到' is used to say something is not in someone's jurisdiction to be commented on/acted on/be involved in etc. The phrase itself is quite neutral. Spoken in angry tone, like in "这事轮不到你说话", it is telling someone to shut up. Spoken in an indifferent tone, like in "这事也轮不到我来管", it could be used to shrug off responsibility or walk away from something.

Lol How do you know the second one? It's a slang in China and also means “it's none of your business”，but a little rude....