Install will not allow trial

I am attempting to install Version 20 Desktop on a M2 MacBook Air. On other Macs I have used Version 15. In this install it is installing the Business Edition and I cannot use a trial as it is expecting a key. I want to install the standard Desktop, not the business edition and use the 14 day trial. I have uninstalled but it appears I am missing some hidden files as the next install still uses the Business edition. I have no clue how to proceed.