My opinion, Bitcoin all time saving mode is the best way. Some time when bitcoin price up then sell and when price down then buy is the best decision. This method all time not working for trade. Many time i noticed when i sell bitcoin or altcoin sell since then price grow up and up. And when I buy bitcoin or altcoin then price low day by day. specialy, altcoin hold, sell and trade big loss. 4 years ago few coins i hold for future. now this coin price few value or most of coin value is zero. Few coin trade, there too big loss. past year in the case of 1 coin invest $1000, this coin price today zero.
Now
*Hold
*Sell
*Trade
Looking forward to the opinion of the experienced.
In fact, most of these incidents happen to everyone. Not only you, but also in our case, such incidents always happen. When the market rises a lot we sell and then see the market take a higher position from that position. And when we buy and then see the market go down further, we feel the same regret as you do.
All the altcoins you invested in were all shit coins. We know that except for a few altcoin, the rest of the coins are very risky to invest in. But keep in mind if you want to invest in altcoin, invest in BNB, Ethereum and do not invest in any other coins for long term. Even if you invest in all these coins and take a loss, there is hope of recovery. But I don't think all the coins you mentioned and damaged will ever recover. In any case, you will not make such a mistake again.