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100 dollar is for personal use. I can use it to anything I want. I use father's credit card for my expenses.
I'll hold you to that statement which means that I am going to tell you to look at yourself and do some self-introspection, are you the kind of person that's going to be going out to have a few drinks with your friends once in a while? Or are you the one that just wants to stay at home or invite them there to have a few drinks? Your answer to these questions would be helpful on how much of that money is going top be in bitcoin, there are other stuff besides those 2 questions that I've said but I hope you get the point. Now if you're the loner type that have a really small circle of friends, I would just carelessly advice you to invest all of it in bitcoin.
Another thing to consider OP is that when you invest in bitcoin, expect price drops that would make you panic and might make you do something ridiculous like bailing out at a lower price than when you've bought your bitcoin, hodling will be a test of patience for you.
Try
www.bitcrash.games where people are doubling their monies/crypto within a couple minutes
This is not the right advice for you OP, don't use that money to gamble, just invest it in bitcoin and hodl. Wth, that's a blatant and reckless way to promote your business, I guess it's normal since it's crash.