Can't Split a Track

I am new to Audacity and am preparing my first track. I am trying to split a track so I can insert another recording to make a correction. I followed the instructions to the letter and track won’t split. However, I was able to split the track in another spot previously and had no difficulty splitting it. .

I followed the instructions to the letter and track won’t split.

Exactly what instructions?

There’s usually more than one way to do things, and I don’t completely understand what you’re trying to do…

Typically if I want to “split” a recording I’ll select/highlight the part(s) I want to keep, then export that selection as a new audio file(s). Then, I can “splice” the separate files back together if that’s what I want.