Sorry because I didn't deliver it fluently but for those who understand what I mean, can I ask your opinion? Thanks!
You are correct that if you increase the amount of Bitcoin you own but the value in US dollars per Bitcoin drops, you could still lose money. You may have a goal to increase Bitcoin regardless of the Bitcoin value if you trust that eventually Bitcoin will increase in value later. That is a legitimate strategy. There are many different trading strategies and they will depend on your particular goals.