can't open my photos on external drive
I am trying to view/download photos from my external drive, but the iPhoto icon is grey with a crossed out circle on it. I moved it to my mac laptop desktop and it appeared to copy the contents to my desktop, but a yellow ! warning comes up saying "iPhoto isn't supported in this version of macOS" when I click "learn more" it tells me "32-bit app compatibility with macOS High Sierra 10.13.4 and later..."
I just want to recover these photos! I have macOS Big Sur on my laptop.
Do I need to pay for something like "recoverit" app in order to recover all of these pictures?
MacBook Pro 13″, macOS 11.3