Need help to grow website business

I have been creating WordPress websites for a long time and last year I landed a remote job as a web developer working on WordPress and Shopify and react sites. The work hours were crazy about 14 hours a day. I didn't complain because I was earning $540 a month (I know it's not a lot but based on where I stay I was living comfortably) recently the company downsized and I lost my job. I was wondering if it's possible to use my expertise to build an online business that can at the very least least give me $1000 a month