Many radio sports talk show hosts with event tickets to give away (to good callers who "bring something to the table") routinely announce that any caller who asks for the tickets is automatically disqualified.
Similarly, the first thing I would do if I won the lottery jackpot is announce loud and clear that anybody, including charities, who asks for money is automatically barred from receiving so much as a single dime.
If you did that, you wouldn’t have to give a dime away.
You’d have it taken from you by unscrupulous people.
Everything mentioned so far is the least of the problems. I don't do lottery, but I have always wondered if it is mandatory for the lottery commission to divulge the identity of the winner.
Why?
Because the biggest threat to the winner, unless he spends all his winnings in bodyguard protection are the miscreants who would kidnap and hold for ramsom,
His wife.
His kids.
His parents.
Brothers and sisters.
Dog, cat or canary...
Burn his house down,
etc.