i agree with the above post, now is the time to invest any little amount you can afford to loss 
, the market is at a very low state now and nearly all the top 100 coins/tokens are all very cheap compare to what they where selling for back in 2017, in my little observation, this time is also a good time to invest, i don't know if btc price can go any lower than what it currently at.
Even if the price after the purchase of coins will fall even lower, even if bitcoin and the entire cryptocurrency will never grow to its maximum values, a small enough growth to normally earn, the market is at a very low state now and nearly all the top 100 coins/tokens are all very cheap compare to what they where selling for back in 2017, in my little observation, this time is also a good time to invest, i don't know if btc price can go any lower than what it currently at.