I bought my first BTC in late 2016, a small sum. Traded it to shit coins, doubled in the bull market. Took out my principal, all remaining profit dropped to zero essentially. Would have been 10x better if I just kept it at BTC. Wasn't until 2020-2022 and the mania around all the shit coins did I really learn and focus purely on accumulating BTC and leave the ponzi games to the others.