This is the importance of doing research and analysis before finally deciding to invest, so that we don't choose the wrong coins for investment.
Indeed, the reality is that not all altcoins will recover after the dump, there are even altcoins that eventually become dead coins, because
the team of developers decided to leave the project. What's scary is that the new altcoins that appear today mostly end up being shitcoins,
meaning that once the price drops it's very difficult to recover. So indeed we all have to be very selective in choosing altcoins for investment.
I agree with your suggestion that we should invest in the top 50 coins, most of which have a fairly high demand and will usually recover if the price of
Bitcoin rises. Especially for beginners who do not have the knowledge and experience, choosing an investment in the top 50 coins is highly recommended.
I have experience holding a coin that I expect to rise in the future, but after waiting for almost 1 year, there is nothing update from the dev and the team and finally, the exchange delists the coin. It is sad but I can not do anything except accepting the announcement from the exchange. I can only search for the other exchange and try to send it to them and sell it at once. At that time, I do not think that the price can increase but I prefer to get the money and send it back to the previous exchange so I can search for the other coin.
It is hard to analyze but that is worth doing because at least, that is the one thing that we must do if we want to make money from trading. That is our job to analyze one by one from the lists so we can find the right coin to help us to make money.
Your bad experience with holding the wrong coins was experienced by many people, including me, also experienced the same thing. It makes us
stressed and upset at first, but it becomes an unforgettable experience and can make us even better. Because bad experiences make us more vigilant
in making decisions, then from that bad experience we can learn a lot to fix the mistakes we have made. It's not an easy thing to do the analysis,
sometimes our analysis is not accurate, but as long as we never give up and always try to give the best. I believe we will be more trained in finding
good coins for trading or investment.