No matter how much someone tries to convince you that they actually know what they are talking about when it comes to financial markets, it is rare to find individuals who have a real clue regarding such affairs for the most part. At the end of the day, financial markets have far too many variables for people to make accurate predictions, and that is why barely anyone was able to predict that we would be in the midst of a bear market right now.
While the technical analysis required to figure out when a bear market might end is outside of the reach of most human beings living in the world, suffice it to say that you can look at precedent and use this to make a few educated guesses. Platforms like trade wise have released a lot of information about the bear market, and most experts agree that these downward spirals last on average 289 days. That means that you can hold your funds for this duration and sell them after, and you would be very likely to turn a profit due to the reason that investors go on a massive bull run after having had to sit on their hands for so long.
It is almost impossible for the bear market to last more than a year because of the fact that the federal reserve will take steps to reverse the situation. They have a vested interest in keeping stock prices high, which is why whenever there is something they can do they will be very likely to go ahead and do it. Panic among investors is the only thing that can make a bear run last longer.