First of all, I can tell you that you can trade in two ways. Short trade, long trade.
If you want to choose short trade, then choose some altcoins. You can make a profit by trading shorts. Coins that go up and down in the market. You can buy from the bottom. You will sell them again. In this way you can make a profit by trading short
You can buy a few coins from top up market to trade long again. BTC is one of those coins. If you want to make a profit in BTC, you can buy BTC and keep it for a few years.
Note: No one can say that you will benefit. But it can be done. So the decision is yours