My strategy is the same as yours which is to buy coins when the prices are low. I think it is a good and safe strategy since we are not skilful traders. IMO, it is important to be able to differentiate real news vs fuds in order to survive in the crypto world.
Getting from low price and selling at high prices are main rule of trading. And all the tactics depend on it.
Also, do not always be greedy for more earnings. Just try to be as greedy as you should.