It's not going to be a good time to buy altcoins for a while from now. We're in the bear market and short upswings like that doesn't mean anything as it comes back down in a day. The good time to invest is going to be when there will be strong signs of continuous uptrend.
my fear is that like last year that started up without stopping, it is true that after there was the collapse but still btc is worth twice as compared to July last year