Business Internet line?

I'm a Twitch streamer and want to get a business internet line. Would that work if I entered my Twitch as a business?

With how many subs?

2000 followers and about 30-40% active subs

In most cases, private individuals can also take out a business rate. The best thing to do is to contact the provider directly or search for suitable information on a provider-specific basis

And how can private individuals get a business line for what reason?

If you want it and pay for it.