You are right that Bitcoin is the best investment. Most of the major investors in the cryptocurrency market invest most of their money in Bitcoin and if you invest in Bitcoin and are not able to hold it for a long time then your investment will have no value. So before investing in Bitcoin one should have a long term mindset and then invest.
Yes Bitcoin is the best coin to invest in crypto market. You must invest in Bitcoin if you want to be risk free. If you suffer a loss while investing in Bitcoin, you can easily recover the loss. But if there is a loss in altcoin then it will be very difficult to recover. This is proof that those who invested $69,000 in Bitcoin in 2021 will almost recover their losses. You must learn to be patient before investing in Bitcoin. If you do not have patience then you will not be able to hold the investment for a long time, if you cannot hold it for a long time you will not be able to make a profit and may face losses.