It's normal for a trader to experience losses because no one can predict the market and even profitable traders agree that. But there are many traders who win a lot in a bullish market rather bearish. Here in crypto, if the market is bullish you can possibly earn multiple of your capital and can be up to 50x or 100x, it happened in year 2021. A lot of traders even newbie traders are getting rich because most of their strat are working since the market direction was always going up. But when bearish came up they disappear. Since I only base on my analysis in the chart, I won't say Bitcoin is seasonal.