Don't attempt to do what is listed in the quote above: according to that you download "it" (i.e. Midlife Crisis.rar) and put "it" (i.e. Midlife Crisis.rar) into the MidLife Crisis\game folder. That will not work.
If you're not willing to provide competent help to MINOS it would be better if you don't post a reply at all.
MINOS: are you running Windows or macOS? If you are trying to patch the macOS version it's different from the installation instructions included in the "Midlife Crisis.rar" file.
If you are running Windows you will need to do the following. These instructions are general as I don't know your system setup or competence level at using the needed programs.
- download the "Midlife Crisis.rar" which I expect you've done
- extract the contents of the "Midlife Crisis.rar" file. Windows users either use "WinRAR" (*shuddder*) or 7zip (*yippee!*)
- one of the files extracted to the confusingly named "Midlife Crisis" folder will be "install guide.txt". View that file and follow the instructions therein. Basically, copy the zz_patch.rpy (and optionally the zz_patch.rpyc) to the "MidLife Crisis\game" folder. This is wherever your RenPy "games" are stored
I say the the extracted folder "Midlife Crisis" is confusingly named is because it shares the same name as the folder (located elsewhere) that you need to copy the patch to.
I hope this helps somewhat.