I think maybe this is the right time to buy bitcoin and some altcoins that have good progress because the price is currently declining and this is certainly a good opportunity to invest in both.
what you convey is a common strategy that investors often invest in, crypto currencies buy at low prices and sell them at high prices to get good profits in their investments to make good use of every opportunity we will get
I always consider investing only in the highest rated coins, but with only one amendment, which will really affect my income in the future. First of all, I take the price level of 2017 as a basis, and even that means a coin. Which coin will bring me more profit if it returns to that indicator again.
If you look at what is happening through the prism of what you said, then you do not need to focus on the most famous coins, but if you take into account certain projects that showed good results even in 2018, it will be very interesting for long-term investments. As an example, you can call the company pundi X.