I don't see yet a crypto-gambling site that offers a lottery that becomes a success in the long-run.
On the other hand, if we take this on a physical lottery, yes the majority closed their service but even they continue to operate, I doubt people will be allowed to go to this place. Lining up in a lottery is defeating the purpose of social distancing and I doubt a community that put under lockdown will have the interest to throw some money to play on a lottery.
Have you forgotten about freebitco.in?
They are still successful up till now and they have weekly lottery on their site.
But I guess others don't really see's them as gambling site and only consider them as a faucet.
I first to know them as faucet site and I used them to get a free bits before but now they evolve and became more successful gambling business here and guess they survive again in times of crisis the same like this since the game they have is much good for those bored people to play on.