if you want to invest and trade I don't think it's too late to invest because Bitcoin is in the correction stage and has not yet reached ath above 65k$
if you only for the short term it is not a problem but you will only get a profit of 10-30% for each trade,
It may be their different choice to buy or wait for the Bitcoin price to experience a very bad decline. some people will also regret not making a decision last year by keeping Bitcoins. you can see the current price of Bitcoin which is very surprising. maybe next year will surprise others with the latest prices.