I am a noob if this involves Regular Expressions. I am using Joomla and also the Advanced Module Manager to write a module to some specific url.

I wish to create a module simply to the url /tv-show and never /tv-show/anthingthing-else/blahblah

I figured the best way to get it done is /tv-show* but clearly not, because it still puts out with other web addresses with /tv-show around the beginning.

I attempted many versions, please let me know where shall we be held failing?

Try the next

/tv-show$

The dollar matches the finish of the string.