crypto here you can gain and also lose so you should enter here knowingly, you won't regret after taking loss but you should better research crypto and invest here knowingly. I believe if you invest in BTC you will profit one day or the other
Aside from research, a consistent source of income is essential so that one can maintain emotional control and hold their coins for an extended period of time while profiting more from the investment.
Lack of stable income will ruin your emotions, causing you to sell your crypto or Bitcoin even if it is losing money, as the OP has explained.