IRS tips

So basically, i am a student, 19 years old. I do refunds for myself as well as investing into crypto's, making my income pretty high. Anyway, I have no job, and i have around 15k deposited into my bank account already. This is just my new bank account. I also have another one which is pretty much just 1500 Welfare every month. (Told government im kicked out etc, so they send me free cash monthly). Anyway, that is LEGIT money, so IRS would not be a problem for me. But what should i do with the dirty income? What do i say to IRS when they ask where it comes from? I try to get my freinds to withdrawal, but still , my income is more than 20k on bank activity. The "income" is all e-Transfers when I sell Bitcoins, as well as deposits from third parties into my bank when i Sell cryptos.

Any tips on what I should do? Like what do i say when they ask me for this shit lol. I know some people here make thousands and wondering what they will say.