You are not a business person, you are a skill person. The first thing you need to do is know how much your skill fetches you at the end of the month. Last time I checked, barbing is not a high-income skill, well, depending on the location, the income can vary. If your income is high, you have no problem thinking of investment, but if your income is low, I wont advice you to start any investment, instead work on improving your income. I understand you wont like to share how much your income is, since it is personal but deep down you know the truth, so do the right thing.
I actually think being a 'barber' or haircut professional is quite lucrative as compared to some other businesses that pay once until another time. You always have money coming in and if you do save in a local bank, that's a good financial practice already that can further ensure you are successful at following a DCA strategy of Bitcoin investment for at least a decade.
DCA strategy of investment would ensure you save or accumulate enough Bitcoin in a safe cold wallet or air gapped wallet while abiding to risk management practices that wade off and prevent scammers and hackers and account freeze actions from your bank.
All you can do to better your situation right now is to do proper research into the Bitcoin market and technology, so as to be aware and knowledgeable enough to invest by yourself and keep it safe.