I have used this for something else a few years ago: It let me select what user to run it as and prompted me for a password while configuring it and then later it didn't need a login any more.
lurch
I'm in EU and I have 2 different internet connections without a data cap, because I work from home and don't want to commute to the office if one type is down. Both have bandwith caps tho (that way they are cheaper and it's still good enough for me).
However, I want to suggest you use traffic shaping. In Linux, I used "trickle" many years ago, so I could download things without disturbing my family streaming or video calling. Idk how it works in other OSes, but the idea is to send a big download through a special network filter that slows it down to your configured bandwith, delaying it so much that you don't reach your bandwidth cap. (The dowload will take months.) Also, I think I have seen something like this built into Steam and Filezilla. If I remember correctly Steam also had the option to pause downloads manually, but you have to remember to keep an eye on it, if you do that.
Exactly as intended.
That ship has sailed, but you have to sign up with a mail account that offers throw away addresses (like yahoo! mail or others). They just put the mails from all throwaways also into you main mailbox. If later you can't ubsubscribe, you can just delete the throwaway. Only problem is, for replies you have to use the mail providers way (i.e. webmailer) so your client doesn't reply with your main address. But I found it very rare I reply to mails from subscriptions.
I also don't understand why their algos cater nazi, racist and nationalist propaganda to young people. Being international corpos, they should be aware they are creating their own worst enemies. How will for example Chinese companies do business in EU, when they raised a xenophobic racist generation? Terrible plan.