The strategy I have created is simple. On the 1st of every month, you check what the top-10  traded currencies of the last month were and invest in them. For example, if I am investing $100 on 1st Nov 2021, I will check what were the most traded (i.e popular) cryptos in the past month (in this case Oct'21) and then invest in that. By following this strategy, you are not jumping into any investment. You are just methodologically checking the popular cryptos at the beginning of the month and investing in them.