On the one hand, you say absolutely the right things - no need to sit back when you have suffered very large losses, it is much better if you take some active steps to recover your losses, but you should not start trading in large amounts. You should always start with small amounts until you get enough experience in this.
I started trading with small amounts. And I got success in some directions. Most of all I like to trade in one coin on different exchanges and play on a small difference in price. To do this, I hold coins on all the exchanges so as not to waste time transferring coins.