Day trading makes a profit but not every day, I have never seen anyone who can consistently win in the market without losing even for top traders. Professional traders are just that their win rate is higher than their loss rate and as a result they are still profitable, but not every day they are profitable.
In this case, my advice would be no: don't view investing or trading as a job that can bring you a daily income even if you are a good trader. Be a person with a stable job and income before thinking about investing in bitcoin.
I agree that it is not that easy to make a profit in day trading every day, it is rare for people to have 10+ days in a row profit every day for example, the longest I had was 4 days in a row, of course in bull runs it becomes easier and maybe you will break over that, but in that case everyone does and you could have just hold it and still made profit so it is not really a big deal.
Its the bear market where day trading shows its power, if you are capable of making a profit even during bear period then it is definitely a great job. This is of course just my own idea of it, but that doesn't change the fact that it is definitely a very hard thing to do.