Hi, unfortunately I bought bitcoin at the peak, then it fell all the way down before I switched over to some of the Altcoins you mentioned, however I didn’t realise the time I switched over to them, that the Altcoins were at a peak and when I switched they then fell down too leading to more of a loss. I also, feel a lot of those coins have maybe had their days of 100x, 10x their gains and had more potential at the time you bought into them.
Don’t buy in at market prices, though. Even though this is a convenient option, it usually knocks a few percentages off your value. I always set my buy order 3% below the current market price on exchanges. The market price is never the best price you can get at that moment on exchanges such as Binance, Bittrex, Kucoin and Poloniex. It might take a day before your order is filled if you set the limit price 3% below the market price, but in my experience, my orders have always been filled.
There are other ways you can incorporate "bitcoin stock" into your portfolio as well. The Bitcoin Investment Trust (GBTC) is one notable option that operates similarly to an exchange-traded fund. It is a trust that owns bitcoins it is holding, and by buying shares of it, you can essentially bet on bitcoin value without actually owning any of your own (their bitcoins are secured using Xapo, Inc. as storage).