Is it too late to start investing in crypto currencies ? Of course not. Prices are very low, so you will be in a better position than other people who joined earlier. You still have the time to consider what are your wishes and make a choice in which coin to invest your money.
It is never too late to invest in an immature market until the market becomes mature and this seems lightyears ahead from now...if it is too late for anything then regarding taking profits, this was indeed better a while ago.
Maybe you were wrong, this market has matured and reached the top but it does not seem to want to stop and is looking to find another peak, and the situation is now very clear, it wants a new cycle and new development. Everything has been set and returned to the bottom again, and investing in the present moment is probably a very good option when the opportunity is coming up a lot but then, when this new cycle is destroyed again, we should stop and stay away from crypto