Among these two strategies, which is better and which d you recommend?
Hodl the coin if you think it has a good potential to increase in the future. It needs a research as to what coin has a potential because if you just ask for opinion of others what coin should you buy then most likely, they already bought that coin and suggest to you to buy so that price would go higher. If you don't have a time to trade then you should just buy a coin and then store it in your wallet for maybe one year. If you have a time though then you should trade because it increase the amount of your coins if you know what you are doing and have risk management.