Can’t find employment

I’ve been looking for work in animal care (boarding kennels, dog day care etc) in Melbourne, but not hearing anything back. I ran my own dog walking business before covid for 8 years then worked at a dog shelter in nsw for a couple of years so plenty of experience. I also have a qualification in animal care. Have been in disability care on mable last year but not much work there either. Have done a good resume and write a cover letter unique to each job and even called and emailed just about every animal boarding centre in Melbourne and no luck. Not sure what I’m doing wrong. Any ideas? Many thanks