to grow bitcoin with a total of $ 9 that you have so I suggest you to exchange it with altcoin which has a cheap price ... so you can trade in large amounts. but to get the most out of capital $ 9 takes a long time ... because $ 9 is very little in cryptocurency ... but I'm sure if we focus and are able to find good altcoin then we can get greater profits.
Bot trading is not easy as most people believe because the function and the active velocity of the bot depend on you OP. If you don't much experience about crypto trading you'll definitely have problem using bot.
I supported what Kakuli said because there are an undervalued altcoin right now which are currently cheap but will surge on the bullish market occur but $9 is still small for you to trade on exchange if the BCH is not on your exchange wallet.