Sorry to hear your loss
Botting has become riskier and as others have said pest control is suicide. If your account insta locked off tutorial I'm assuming you used a proxy?
Well, no one can say for sure. If you avoid interactions between the accounts and don't bot them both on the same IP at the same time you should be ok from my experience..
Right. Well free to play is a higher ban rate anyhow, and you could be getting banned if you're botting tutorial island. Let the accounts you make sit for 48 hours, otherwise you could be getting banned from that and not what you're botting.
If you're making a main account you should get 70/70/70 and go to the Nightmare Zone. Ban rate isn't as high seeing that you're in a private instance training.
Not positive on decent training spots though, sorry. I would avoid anywhere that is farmed for profit though to reduce ban rates.