Bitcoin has become more popular in the financial world due to its sudden growth but When I see exchanges there is a high percentage of people who are trying to sell there Bitcoins to make temporary gains using current price increase and some fear this is a temporary situation so they use this moment to abandon the market but My personal opinion is they doesn't understand this is a time that any investor should invest more into Bitcoins because after along time BTC has shown us it is not a Bubble or just another financial failure so as investors we should have a clear understanding in order to make this opportunity an advantage
Yes, I think that bubble belief was tested in 2018 and Bitcoin didn't burst. It remains till today, proving that the new tech has come to stay. On the other hand, as per investment, I believe those who sell off from time to time on exchanges do so for trading. And to do this one needs the required technical knowledge to meander through the murky waters of crypto trading. In summary, people should take their chances on when they get in and out. Nobody knows the perfect entry except in hindsight.