You can set up a trust and have a lawyer accept it to keep you anonymous, even in public winner states. Obviously you buy the ticket when it’s at 1 billion+. Now you invest it after taxes and live off 20 mill+ yearly yield.

You start a hands off small business to launder your own legal money. This is how you explain to your family that you were able to build a small modest home at least an hour away - just far enough to be inconvenient but not impossible for family to visit. Your real home is a custom built stone castle just over the hill in your back yard. You build a tunnel connecting them in case family drops in unannounced.

Or just do the first part and fake your own death. Depends on your relationship with family and friends.

Sometimes it’s 30 mio around here, and a lottery win goes tax free.