Absolutely yes your thoughts are correct. Buy a coin that has a possibility to increase someday and trusted too. Because of so many coin you need to be wise in choosing a coin to invest and hold.
Right that market is full of coins but choosing the best among them needs experience and knowledge, before buying some coins try to read the market, see the price graph of every coin then buy, dont choose the highly expensive coin but the one most of promising, trusted and low price coin as it will give your more profit than the high price and low demand coin, it is good to buy bitcoin now a day because it is at high demand in the market, buy now and hold with patience in your bitcoin wallet safely.