I need to remove Big Sur from my 2017 MacBook Air, and reinstall Catalina.
Can I still get that OS? Big Sur has destroyed my wifi speeds, and I essentially have dial up with a 1 gig connection. Catalina never caused this problem. All of the tips for improving wifi speed with Big Sur have failed, and my only option is to reinstall Catalina, but I don't want to erase everything on my hard drive. Do I have any options?
MacBook Air 13″, macOS 11.6