I am seeing the below error when trying to install TinyTex on my 2011 iMac:
The directory /usr/local/bin is not writable. I recommend that you make it writable. See https://github.com/yihui/tinytex/issues/24 for more info.
0:86: execution error: User canceled. (-128)
add_link_dir_dir: destination /usr/local/bin not writable, no links from /Users/janesmith/Library/TinyTeX/bin/x86_64-darwinlegacy.
tlmgr: An error has occurred. See above messages. Exiting.