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.
Its best to buy when price is low and sell when price is high but it does not usually happen that way at times you will buy and the price will keep falling so i still continue to buy and wait till price bounces back. When you invest in altcoins there is bigger risk involved than investing in bitcoin, altcoins are not reliable and most projects just die off. I advise you spend your money more on Bitcoin and few alts that are already well established like Ethereum and the likes.