is there a difference between 電視上vs電視裡?
Depends how you look at it but you could equate them to the following English:

電視上 = on the tv
電視裡 = in the (tv) show

In the second one I'm inclined to treat 電視 as a noun meaning &quot;TV show,&quot; whereas in the first one it's more likely to just be &quot;TV&quot; on its own.