OP, there is no question in this; everyone knows that Bitcoin is better than Altcoin. If he has even a little knowledge about crypto, then he must know which is the best option.

If you take my opinion, I will advise you to invest in Bitcoin for holding, but act on your own. Do not take my opinion as financial advice, but as educational. So now let us come to the long-term investment: Bitcoin is a better option for you than Altcoin, and besides my opinion, many public analysts also say that BTC is better for holding. And the reason for this is that if you look at the price of Bitcoin, those who invested in it in the bear market and held it and sold it in the bull market have earned a good profit. And anyway, Bitcoin long-term is bullish. I myself have started collecting the signature payment, and once enough has been made, I intend to sell it in the bull market.

So it means that the only authentic and best investment asset to hold is bitcoin. No guarantee from Altcoin can guarantee that it will really give you good returns in a bull market.