From my experience so far in the crypto business, not all cryptos are profitable. before you trade any coin or token you to monitor the movement in the market of the coin first and see is what you can invest in and trade. There are some projects you invest in and do not find meaningful movement in them.
Do research firstly before invest.
Not all cryptos are profitable, Several of them are scam and also worthless.
We should have good analysis to choose the project or coins.
It will take several time to do research.
If you have good analysis ,you will detect what coins are better to choose for short or long term.
We know crypto is unpredictable, So be careful.