Is 1$ investment in crypto every day enough? I'm making up to 10$ per day and I don't want something that will tie me down financially since I have other things I'm using the money for aka responsibilities so all I can afford is 1$ per day, also is BTC the best option with this 1$ per day?
You can try to invest in all altcoins with your 1$
, you can hope that 1$ in every altcoin can gain for 10-100x in the next bull run. Bitcoin is not a bad option if you want to do that but if you want to take a risk then you can try altcoins. As long as you use the money that you can afford to lose then altcoins or Bitcoin is not a problem. One dollar a day, it's like instead of saving in fiat, you should convert them to bitcoins, and if you can do it in the long run with bitcoin, you'll reap unexpected results. Don't underestimate 1$ because if it is accumulated daily and maintained for a long time, plus the increase in bitcoin price, it is not a small amount.
He seems to be having a hard time making money and giving the advice to throw money at altcoins is no different from telling him he should gamble. And to be honest, I have never seen anyone get rich from gambling.