When do we actually start talking about the long term?
Long-term is relative, perhaps from 3 , 5 or from 10 years only. It is certain that the speech is not from Day traders, speculations or bets. Those are for private persons well like pure luck and/or bad luck thus coincidence principle. With CFD trade the brokers are even obligated to report such warnings! „CFD are complex instruments and could led because of the leverage with the high risk to lose money quickly. 77% of small investor accounts lose money when CFD trading with this provider.

We invest for the long term and don’t talk about getting rich quick. Most rich people in the financial industries have taken years to reach their goals. Even the Bitcoin millionaires, you should be invested from 10 or 15 years to get rich from it now.
Long-term and regular re-buying are historically a safe way to curb short fluctuations and achieve stable solid returns. This can be seen from the DAX return triangle that the fluctuations are strong in the first few years, but at some point can even just get out with a profit.

