Whether it's a bear market, or a bull market, it is making money, method is very important
The method is simple bro, it is called patience and most traders who get washed out during the process lack this property.
If you are patient you will gradually be able to see the price you want to buy at during a bear market. It is wrong to sell during a bear market which most people end up doing, not knowing that it is a part of a cycle.
You also need to be mentally prepared at any time to be able to face a bear or bull market. This starts by risk management and allocation of funds in trading logically, not going all in.