Stop-loss is only for the short term, you can say no more than 1 day so it can be used, but winning for the long term why is it necessary? Shouldn't we wait a little longer for the price to recover? Only a little correction happens a lot of this panic is making the market a little bumpy so I would still believe in the handle seeing the market continue to recover several times after experiencing a correction as well.
Ignore the rest of the news and we can look at some good references to keep cool with our holding.
I believe that stop loss is not a thing for long term investors anyway, it is something for traders and for traders it works like a perfect charm. Why? Because if your aim is to make money for a quick period of time, like maybe 10-30 minutes (as much as few hours but needs to be on the same day) you could definitely use stop loss and make a lot of money if you use stop-loss and not lose too much, because if you do not lose too much and earn normally (there is no cap on earning like stop loss) you could lose 1% but gain 5% so you will be in profit unless you face too many stop loss in a row.
Whereas if you are a long term investor, like let's say I am in it for a decade, my aim is to retire at 2030 with all the money I made from crypto, in that case I do not care about stop loss, why? Because I am not losing anything as long as I do not sell it neither.