As for now, I hope that many alts have reached their bottom, and we will see green market again very soon

Of course, I agree with you, almost all altcoins are on the bottom now, and I don't think that they will dump very much again, maybe 10-15%, not more, so now is a good chance to buy.
The dump stage has already ended and i just see the bullish will come asap. There is a little correction when the price has been surging. It cna be considered as a signal to the bullish trend is on the way. The majority of altcoins are regaining its value again right now