Will a fresh install of Catalina delete my data?

I had a working Catalina and wanted to update both OC and MacOS to Big Sur and it all went south, started getting kernel panics and weird lines during the verbose log, so I decided to boot again from the original USB with Catalina and the EFI that worked fine for months but I'm getting the same perros nos, kernel panics and errors in verbose log so I'm not sure what to do and I'm thinking about installing the latest version of OC and kexts and Catalina all over again but I'm not sure if would lose all of my info, what do you think?

submitted by /u/zolitariuz
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