can give an example of a good robots.txt to wordpress

hello

I have problems with two wordpres websites that have the same robots.txt
appear and disappear
I dont know
if I can maybe be by robots.txt

can give an example of a good robots.txt to wordpress?

I have this for several years,
is as follows:

User-agent: Mediapartners-Google *
Disallow:


User-agent: *


Disallow: / cgi-bin /
Disallow: / page /
Disallow: / search /
Disallow: / tag /
Disallow: / wp-admin /
Disallow: / wp-includes /
Disallow: / wp-content / plugins /
Disallow: / wp-content / themes /
Disallow: / wp
Disallow: /? S =
Disallow: / trackback /
Disallow: / *?
Disallow: * / trackback /

Allow: / feed / $
Disallow: / feed
Disallow: / comments / feed
Disallow: / * / feed / $
Disallow: / * / feed / rss / $
Disallow: / * / trackback / $
Disallow: / * / * / feed / $
Disallow: / * / * / feed / rss / $
Disallow: / * / * / trackback / $
Disallow: / * / * / * / feed / $
Disallow: / * / * / * / feed / rss / $
Disallow: / * / * / * / trackback / $

User-agent: MSIECrawler
Disallow: /

User-agent: WebCopier
Disallow: /

User-agent: HTTrack
Disallow: /

User-agent: Microsoft.URL.Control
Disallow: /

User-agent: libwww
Disallow: /

Code (markup):