Ok, we sold everything at a loss. What do you advise? Should we buy again or what?

All the manipulations of the whales to the code owners of the futures and the withdrawal of investors at a loss for fear of the decline "while the investor should not be afraid if the market declines, and as long as you do not sell, you are not losing." You must understand that this field was created to make traders and people who do not control their emotions lose their money.