Often taking a step backwards is what you need to propel yourself forward, it doesn't have to be a bad thing, and can open the door to lots of opportunities.
It is also worth thinking about the role you want, and how it might take different forms at different business. Maybe expand your search a bit, you might find that you find a role you're really interested in and very well suited to, just under a different name/title than expected.
Often getting into a business is the hardest part, but once you are a member of the team, it can be easier to move around and explore internal opportunities in the future.