Sorry you are having trouble getting financial help you need with your business.
I’ve heard that there are investors out there who help businesses expand. I have no idea what their interest rates or expectations about equity sharing in the business are, but, maybe you will find someone that way to give your business the financial boost it needs. Sounds like, for whatever reason, that you just aren’t going to get a conventional bank loan/line of credit.
They are out there but the ones I’ve found so far have pretty high expectations. They seem to be focused on the desperate businesses which I’m not.
They also look for companies larger than I am.