Problems with Lightroom 6 on 2021 Macbook Pro

I have Lightroom 6 on my 2010 Macbook Pro (High Sierra). I just got a 2021 Macbook Pro with the Max chip. I used Migration Assistant to transfer my programs over. I opened Lightroom 6. When I did so, it had a pop up message about how I needed to download some other software to make things compatible or something - I unfortunately don't really remember what it said exactly and can't replicate it. I clicked yes. Then I started getting these "ReceiverHelp will damage your computer" and similar error messages. I think it had to do with Cisco, but not sure. I deleted the files. Then when I tried to open Lightroom 6, it displays the splash screen for less then a second, then closes. I really really want to be able to use this software on the new laptop. Any help? (Note I also posted this elsewhere.) (And this is related to, but different specifics than https://community.adobe.com/t5/download-install-discussions/new-mac-book-pro-wont-open-my-lightroom-version-6/td-p/12542570)