Not running apps
So when I start my iMac with Catalina os I cannot get any apps to run. I just get the rainbow wheel or sometimes the light blue dark blue wheel. It takes minutes to open the finder or drop downs. I have ran a diagnostic and it tells me nothing is wrong? Please help me I have a lot of data that has not been backed up so at least I want to get the data before doing anything drastic…
iMac 21.5″, macOS 10.15