It’s okay to take losses. It is preferable for your business (and your sanity) for your business to lose small amounts of money often if it can make a large amount every so often.
The problem with losing is when it’s easy to get wins and easy to make chunks of money, but there is a chance you lose it all if the markets turn bad (or some other catastrophic event takes place.)
That’s Russian-roulette. Highly likely that the bullet is not in the chamber, but if it is, you lose everything.
Don’t play Russian-roulette.